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Barack Obama
This account is run by #Obama2012 campaign staff. Tweets from the President are signed -bo.16,099,650 followers | Follow
Ellen DeGeneres
Comedian, talk show host and ice road trucker. My tweets are real, and they’re spectacular.11,509,480 followers | Follow
The New York Times
Where the Conversation Begins. Follow for breaking news, NYTimes.com home page articles, special features and RTs of our journalists.5,197,509 followers | Follow
Dalai Lama
Welcome to the official twitter page of the Office of His Holiness the 14th Dalai Lama.4,341,777 followers | Follow
Stephen Colbert
3,496,925 followers | Follow
BBC Breaking News
Breaking news alerts and updates from the BBC. For news, features, analysis follow @BBCWorld (our World edition) and @BBCNews (our UK edition).3,282,617 followers | Follow
The White House
Official WH twitter account. Comments & messages received through official WH pages are subject to the PRA and may be archived. Learn more http://wh.gov/privacy2,897,709 followers | Follow
Rachel Maddow MSNBC
I see political people... (Retweets do not imply endorsement.)2,123,472 followers | Follow
BBC News (World)
The latest stories, features and updates from BBC News (World edition). For UK edition, follow @BBCNews. For breaking news, follow @BBCBreaking2,024,156 followers | Follow
The Economist
Official site for The Economist. Follow for article updates, events and news from The Economist. To subscribe go to: http://econ.st/ddIkQq1,976,170 followers | Follow
TextsFromLastNight
remember that text that you shouldn't have sent last night? we do... send your TFLN to 768431,959,997 followers | Follow
National Geographic
Since 1888, we've traveled the Earth, sharing its amazing stories with new generations. Official Twitter account of National Geographic.1,901,280 followers | Follow
Huffington Post
The Internet Newspaper - Curated by @kerstinshamberg, @lauralizhibbard, @socialmia, @deanpraetorius, @travelinganna1,850,042 followers | Follow
The New Yorker
The New Yorker is a weekly magazine with a mix of reporting of politics and culture, humor and cartoons, fiction and poetry, and reviews and criticism.1,547,618 followers | Follow
ReadWriteWeb
The latest news, analysis and conversation in all things web, tech and social media from the ReadWriteWeb.com team.1,176,712 followers | Follow
TEDTalks Updates
The official feed for daily TEDTalks. Only new TEDTalks are posted on this feed. For all TED news, follow @TEDNews too!1,021,807 followers | Follow
United Nations
Official twitter account of United Nations. Get the latest information on the UN.870,762 followers | Follow
ColonelTribune
The Colonel knows Chicago. He is also a more gentlemanly version of @ChicagoTribune806,885 followers | Follow
Harvard Biz Review
The latest Harvard Business Review blog posts, Management Tips of the Day, Daily Stats, and more.749,849 followers | Follow
Fledgling Wine
A Twitter wine project that promotes literacy around the world.719,806 followers | Follow
Room to Read
We partner with communities in Asia & Africa to transform the lives of millions of children through literacy and gender equality in education.569,620 followers | Follow
Justice Department
Official DOJ Twitter account. DOJ does not collect comments or messages through this account. Learn more at justice.gov/privacy-file.htm470,914 followers | Follow
creativecommons
Creative Commons is a nonprofit corporation dedicated to making it easier for people to share and build upon the work of others, consistent with the rules of ©.463,800 followers | Follow
Open Government
Official Twitter account of the White House Open Government Initiative458,190 followers | Follow
New York Times Books
Book reviews, news, author profiles, interviews and more on books from The New York Times. (Tweets by @johnwilliamsnyt)453,571 followers | Follow
AmnestyInternational
We've been fighting the bad guys since 1961 - you can join us! Get the latest #humanrights news and actions. Official Amnesty International USA profile.436,665 followers | Follow
Library of Congress
We are the largest library in the world, with millions of books, recordings, photographs, maps and manuscripts in our collections.380,031 followers | Follow
Human Rights Watch
HRW provides timely information about human rights crises and developments in 90 countries around the world. Curated by @jimmurphysf. Our Staff: @hrw/our-people348,715 followers | Follow
TheBritishMonarchy
http://www.royal.gov.uk The latest news on Royal events328,391 followers | Follow
NYTimes Science
Science, Environment, Space and Cosmos News From NYTimes.com/Science317,690 followers | Follow
The British Library
Colin Wight is Senior Content Manager at the British Library. Assisted by Hanna Fayaz. Working on Writing Britain, YouTube, Facebook etc.288,995 followers | Follow
Radio-Canada Info
Prenez des nouvelles de votre monde. Tous nos grands titres et nos alertes de dernière heure, avec une équipe à votre écoute (aidée d'un fil RSS).221,052 followers | Follow
NYT Small Business
A place where small-business owners can compare notes, ask questions, get advice, and learn from one another's mistakes.207,264 followers | Follow
ACLU National
The ACLU is a nonprofit, nonpartisan, public interest org devoted to protecting the basic civil liberties of everyone in America. Links: bit.ly/pages/privacy134,601 followers | Follow
Harvard University
Official Harvard University Twitter feed. Updates on teaching, research, life & learning @Harvard in Cambridge, MA and around the world. Staffed by comms dept.122,052 followers | Follow
jian ghomeshi
Broadcaster. Writer. Musician. Producer. Manager. Mammal. (in that order, for now) Host and Co-Creator of Q on CBC Radio & CBC TV113,842 followers | Follow
Michael Ignatieff
90,983 followers | Follow
Stanford University
Stanford University is one of the world's leading research & teaching institutions. Official twitter feed by http://digitalinterns.stanford.edu74,887 followers | Follow
Torontoist
Torontoist is about Toronto and everything in it. Have tips? E-mail tips@torontoist.com, or @ or DM us.67,003 followers | Follow
Harvard Research
Advances in research and scholarship from across Harvard University65,207 followers | Follow
AmnestyInternational
Welcome to the official profile of the International Secretariat of Amnesty International. Find out about our human rights campaigns and get involved!56,894 followers | Follow
TimesHigherEducation
Global higher education news, views and reviews. Publisher of the Times Higher Education World University Rankings42,492 followers | Follow
Yale University
This is the official Twitter feed for Yale University. News, events and updates from across campus.38,508 followers | Follow
Harvard Law School
The official Twitter profile of Harvard Law School. Run by the HLS Office of Communications.32,114 followers | Follow
Stanford Business
Business research, news and ideas from the Stanford Graduate School of Business. Tweets by @karenlee28,982 followers | Follow
Princeton University
A vibrant community of learning that endeavors to fulfill its informal motto, ''in the nation's service and in the service of all nations.''26,461 followers | Follow
NYT Education Life
A quarterly section about colleges and universities, in and outside the classroom. Get headlines and comments on the articles from the editor.24,005 followers | Follow
Yale Environment 360
Opinion, Analysis and the Latest Environmental News - A Publication of the Yale School of Forestry & Environmental Studies.23,983 followers | Follow
Steve Paikin
Host of TVO's current affairs program, The Agenda with Steve Paikin23,826 followers | Follow
Harvard Press
Cambridge, New York, London. Offering nonfiction in the humanities, social sciences, and sciences. Review copy requests: lisa_lapoint@harvard.edu22,118 followers | Follow
Harvard Education
The official Twitter feed of the Harvard Graduate School of Education21,539 followers | Follow
UN News Centre
Official twitter account of the United Nations News Centre, the UN's breaking news service. http://www.un.org/News/ http://www.facebook.com/UN.News.Centre20,948 followers | Follow
The New School
A leading university in New York City offering programs in art and design, liberal arts, management and policy, and the performing arts.20,706 followers | Follow
Berkman Center
The Berkman Center for Internet & Society at Harvard University - exploring cyberspace, sharing in its study, and helping to pioneer its development18,466 followers | Follow
Transparency Int'l
Transparency International is the global coalition fighting against corruption.17,918 followers | Follow
Yale Press
Founded in 1908 by George Parmly Day, and his wife Wilhelmina, Yale University Press is one of the oldest and largest American University Presses.16,857 followers | Follow
Urban Times
Optimistic Forward-Thinking Digital Magazine - Talking about current issues and solutions that impact our global future.16,776 followers | Follow
United Nations Photo
The official Twitter page of the United Nations Photo Library: UN Photo covers UN meetings, events and fieldwork and holds a collection of about 800,000 images.16,581 followers | Follow
HarvardKennedySchool
Ask what you can do. John F. Kennedy School of Government at Harvard.16,231 followers | Follow
Harvard Magazine
Keeping Harvard alumni connected to the University and to each other.15,753 followers | Follow
Harvard Social Media
Harvard University ABCD Social Media meets monthly to discuss & demonstrate the variety, security, implementation & uses of #socialmedia tools & the social web.14,518 followers | Follow
The Harvard Crimson
The Harvard Crimson, founded in 1873, is the nation's oldest continuously published daily college newspaper.11,763 followers | Follow
SickKids Foundation
SickKids Foundation supports The Hospital for Sick Children (SickKids) in Toronto, Canada. Our vision: Healthier Children. A Better World.™ Tweets by LB and LT.10,574 followers | Follow
TakingITGlobal
We empower youth to understand and act on the world’s greatest challenges.10,242 followers | Follow
Harvard Alumni Assoc
The Harvard Alumni Association (HAA) maintains and enhances a highly engaged, vibrant community of alumni and friends worldwide. Connect today! haa@harvard.edu10,092 followers | Follow
NYT Personal Tech
Find breaking technology news from Circuits on the Internet, telecommunications, wireless applications, electronics, science, computers, hardware, software.9,620 followers | Follow
Volunteer Canada
At Volunteer Canada, we encourage all Canadians to get involved in their communities and we work with all types of organizations to engage today’s volunteers8,461 followers | Follow
Pride Toronto
Official Pride Toronto tweets #PrideTO. Pride Week June 22 to July 1st, 20128,273 followers | Follow
This Magazine
Progressive Canadian politics and culture. Because Everything is Political. [designated tweeter: @gfscott]7,678 followers | Follow
NYT Globespotters
On Globespotters, NYTimes reporters and editors (and readers) from around the globe share up-to-the-minute tips about the cities where we live and visit.6,805 followers | Follow
Princeton Univ Press
Princeton University Press is a leading book publisher of academic, trade, reference titles and textbooks.6,279 followers | Follow
Harvard Extension
Harvard's primary resource for continuing education for over 100 years. We offer evening and online courses and part-time degrees & certificates to the public.5,959 followers | Follow
The Princeton Review
We offer several Test Prep options to help you achieve success on the SAT, ACT, GMAT, GRE, MCAT, LSAT, and more! Contact us today at 888-995-5585 to learn more4,159 followers | Follow
CBC_TOCommunity
CBC Toronto's local events & programming. Managed by Nadia & Emily.3,856 followers | Follow
Peter Deitz
Co-founder at @grantbookorg, Interested in #microphilanthropy #fundertech and #nptech3,741 followers | Follow
Brookings Governance
Working to improve the performance of our government. Focuses: U.S. governance issues, policy, politics, elections & institutional reform @BrookingsInst1,845 followers | Follow
John Howard Society
The John Howard Society of Ontario promotes the mission: Effective, just and humane responses to crime and its causes. RTs do not imply endorsement.1,742 followers | Follow
Digital Storytelling
Center for Digital Storytelling workshops and programs help individuals and organizations tell personal stories that transform, educate and make change.1,705 followers | Follow
Youth Assisting
YAY | Youth Assisting Youth, is a non-profit charitable organization that provides a peer mentoring service to improve life prospects for at risk youth.1,699 followers | Follow
Angie Kramer
Digital, Loyalty, Strategy, Social CRM & Mobile. I tweet about anything that amuses me.1,214 followers | Follow
Verge Magazine
Verge is North America's magazine for exploring opportunities to study, work and volunteer abroad.918 followers | Follow
The Paprika Festival
This juried festival seeds, develops and presents works of theatre written, devised, directed, performed and designed by emerging young artists:March 1-10 2012714 followers | Follow
BBBS Toronto
Big Brothers and Big Sisters of Toronto is a non-profit organization that provides mentors to children and youth in need of additional positive adult support.595 followers | Follow
Volunteers4Goodluck
Our mission is to mobilise volunteers to inform and to enhance the quality of our electoral process.452 followers | Follow
YouthWithoutShelter
Ending Homelessness... One Youth at a Time, One Step at a Time448 followers | Follow
miranda mulholland
fiddle player/singer/wine lover www.greatlakeswimmers.com www.bellestarr.ca362 followers | Follow
Queen's CRL
The Centre for Responsible Leadership is located @queensu School of Business.273 followers | Follow
nytimeskristof
258 followers | Follow
Andrew Ross
Publisher & Editor, Jobber News Magazine, Canada's only automotive aftermarket distribution magazine. Also manages AutoServiceWorld.com for entire aftermarket.174 followers | Follow
Laurie Mook
Assistant Professor, School of Community Resources and Development, ASU91 followers | Follow
Laurie Mook
5 followers | Follow
Curated by Volunteer Toronto
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