Social Media Twitter List by Adam Boston on Listorious

YouTube

Tweets on YouTube news, trends, and — of course — videos.

12,898,175 followers | Follow

TwitPic

Share photos and videos on twitter

7,358,155 followers | Follow

A Googler

News and updates from Google

4,769,651 followers | Follow

Facebook

Giving people the power to share and make the world more open and connected.

3,785,369 followers | Follow

Pete Cashmore

The largest independent website dedicated to news & resources for the connected generation. Tweets from @mashable staff. Send questions/comments to @mashablehq.

2,870,737 followers | Follow

TweetDeck

TweetDeck is an app that brings more flexibility and insight to power users. Questions? https://t.co/XOH17KoJ

1,637,481 followers | Follow

woot.com

Woot : One Day, One Deal. Check out the followers for other Woot accounts.

1,630,551 followers | Follow

Support

Updates from Twitter User Support. We're unable to assist with account suspension/verification.

1,439,302 followers | Follow

Twitter Search

We are Twitter Search! Follow us for search tips and news about cool features. Tweet us your ideas, feedback, and questions.

1,065,912 followers | Follow

TwitBird

TwitBird is a twitter app for iPhone, iPod touch and iPad. It has a paid version and a free version on app store.

916,019 followers | Follow

Dropbox

Always have your stuff, wherever you are.

652,203 followers | Follow

Klout

The standard measure of online influence. Do you have Klout? -Tweets from http://klout.com/#/klout/list/14897. For support please go to http://support.klout.com

436,569 followers | Follow

foursquare

foursquare helps you explore the world around you. Meet up with friends, discover new places, and save money with Specials! Questions/support: @4sqSupport

418,201 followers | Follow

Skype

Official news and updates from the team at Skype. Please address support questions to @SkypeSupport.

270,780 followers | Follow

GetGlue

GetGlue is a social network for entertainment. Check-in & rate things to discover new favorites, see what your friends are into, get stickers & win free stuff.

198,940 followers | Follow

Formspring

Discover, share & smile :) The Spring is here listening to its fans & followers! SupportTeam tweets: @formspring_help. Site updates: http://status.formspring.me

174,979 followers | Follow

LinkedIn

Connecting the world's professionals to make them more productive and successful

161,598 followers | Follow

evernote

Remember everything with the help of the computers, phones and tablets you use daily.

145,897 followers | Follow

SocialScope

all your favorite services in one awesome app

119,574 followers | Follow

Adam from Twibes

A twibe is a twitter group. Follow me to meet other people with similar interests.

95,494 followers | Follow

Twfeed

Follow us for updates on the twitterfeed.com service. For support check out @twf_support, or email us at support@twitterfeed.com

95,059 followers | Follow

TweetMeme

Tracking Twitter Memes

87,721 followers | Follow

posterous

Share smarter with Posterous Spaces. Easily share anything publicly or privately by web, email, or mobile app. For support please visit help.posterous.com

80,320 followers | Follow

Big Engine Media

Internet Marketing News & Updates

55,368 followers | Follow

Yelp

The official Twitter voice of Yelp HQ. It's a place for us to talk about press, product and policy at Yelp.com. Customer support questions: yelp.com/contact

54,727 followers | Follow

grader

What's your Twitter influence? How does your website rank for SEO? Find out with HubSpot's free Grader line.

53,183 followers | Follow

Paper.li

Creator of Paper.li, the curation platform that enables you to turn Twitter, Facebook and RSS into online Papers and to treat your readers to fresh news, daily.

44,240 followers | Follow

Twellow Directory

Official updates from the Twitter directory service, from the producers of WebProNews.com

42,677 followers | Follow

PayPal

PayPal on Twitter: follow for news and general updates. For account-related questions, follow @AskPayPal

40,873 followers | Follow

Quora

Connecting you to everything you want to know about. Have a Quora account issue? Email: privacy@quora.com. Have a Quora technical issue? Email: bugs@quora.com.

35,234 followers | Follow

bitly

Shorten, share and track your links with bitly!

34,375 followers | Follow

HubSpot Platform

Welcome to our new digs to support and chat with app devs who want to build on the @HubSpot platform. (What is @HubSpot? Watch: http://bit.ly/p8ktrz)

29,155 followers | Follow

Tweet Spinner

A neat way to create and schedule designs, profiles, tweets, follows, prunes, and more

27,245 followers | Follow

about.me

Carve out your own little corner of the web. Usually about.me/lauraglu here. Check out blog.about.me too.

21,505 followers | Follow

Tweeguide

Twitter tools, tips, tricks, news, updates - that's tweeguide

17,686 followers | Follow

Untappd

Untappd is a mobile app that allows you to socially share the brew you're currently enjoying, as well as where you're enjoying it, with your friends!

15,900 followers | Follow

Echodemic

Echodemic, Inc. (ek-oh-dem-ik), is a social media marketing firm based in Santa Barbara.

15,029 followers | Follow

Follower Wonk

Our app lets you search Twitter bios; measure yourself to competitors; audit & track followers; and find & cultivate key relationships.

14,437 followers | Follow

Shazam

Discover, explore and share more music, TV shows and brands you love. Experience more.

11,610 followers | Follow

TweetAdderWorks

If it isn't already obvious, we love Tweet Adder! We blog & tweet about all things related to Twitter Marketing and Social Media Marketing.

9,784 followers | Follow

Meebo

Meebo organizes the web around people to make it simple to find & share things online.

9,714 followers | Follow

Twittorati

9,687 followers | Follow

We Form Your Lists

Helping you more effectively network and engage with groups of people that matter to you.

9,146 followers | Follow

Get Satisfaction

We're in the business of building the best customer communities. Our team is available to answer questions M-F, 9-5pm PT. Also find us @GSFNStatus

8,647 followers | Follow

Feed140.com Team

Marketing with Twitter: We bring you all of the news, tips, and fresh Twitter marketing info to help you build your business. We follow back!

7,985 followers | Follow

Android TweetDeck

This account is no longer in use. For all TweetDeck queries, please contact @TweetDeck

7,140 followers | Follow

Desktop TweetDeck

This account is no longer in use. For all TweetDeck queries, please contact @TweetDeck

6,962 followers | Follow

UberMedia

Developer of feature-rich social media products: Chime.in, UberSocial & Echofon. Check out @chimeinnow, @UberSoc, or @echofon.

6,738 followers | Follow

Twitalyzer

Official Twitalyzer Twitter account. Visit Twitalyzer at http://twitalyzer.com

6,600 followers | Follow

Trendistic

See charts for trends in twitter. Select a region to zoom in, click on the chart to see tweets from that time.

6,481 followers | Follow

Adam Boston

5,900 followers | Follow

Zerply

Killing the résumé

5,523 followers | Follow

Tungle Rocks

Scheduling Made Easy

5,335 followers | Follow

ChromeDeck

This account is no longer in use. For all TweetDeck queries, please contact @TweetDeck

4,870 followers | Follow

TweetReach

Measure the reach and effectiveness of your tweets with detailed metrics. Free & paid one-time reports, or go Pro with ongoing real-time analytics.

3,704 followers | Follow

Twazzup

Cutting through the realtime noise

3,459 followers | Follow

Web Media University

Web Media University provides on-going Social Media Training and Certification. Learn the best kept secrets from the top experts in Facebook, Twitter and more!

2,388 followers | Follow