100 PR People Worth Following on Twitter

http://www.conversationagent.com/2009/09/100-pr-people-worth-following-on-twitter.html

100 Directors, Screenwriters and Actors on Twitter

http://www.slashfilm.com/screenwriters-directors-and-actors-on-twitter/

100 Money Experts You Should Follow and Learn From on Twitter

http://www.accreditedonlinecolleges.com/blog/2009/100-money-experts-you-should-follow-and-learn-from-on-twitter/

If Twitter Was 100 People…

http://www.informationisbeautiful.net/2009/if-twitter-was-100-people/

100 Terrific Twitter Feeds for Humanitarians

http://www.onlinedegreeprograms.com/blog/2010/100-terrific-twitter-feeds-for-humanitarians/

100 Ways to Use Twitter In Your Library

http://acceleratedbachelordegree.org/100-ways-to-use-twitter-in-your-library/

100+ of the Best Authors / Book Lovers on Twitter

http://mashable.com/2009/05/08/twitter-authors/
http://www.onlinecolleges.net/

100 stock pickers on Twitter

http://twitter.com/TheSocialExec/bestdamnstocktraders

6 Best FREE Twitter Background Websites

http://franklinbishop.net/6-best-free-twitter-background-websites/

100 Twitter Marketing Tips to Promote Business

http://www.wittyparrot.com/marketing-blog/100-content-marketers-to-follow-on-twitter
http://www.verticalresponse.com/

100 Best Comedy Twitters

http://ccinsider.comedycentral.com/2009/02/27/the-100-best-comedy-twitters/

100 most influential news media Twitter accounts

http://memeburn.com/2010/09/the-100-most-influential-news-media-twitter-accounts/

137 Best Users to Follow on Twitter

http://www.pastemagazine.com/articles/2009/10/the-best-users-to-follow-on-twitter.html

Top 100 Academic Law Twitter Feeds

http://www.rasmussen.edu/degrees/justice-studies/blog/top-100-academic-law-twitter-feeds/

100 Great Twitter Feeds for History Geeks

http://www.onlineclasses.org/2010/07/06/100-great-twitter-feeds-for-history-geeks/

100 Most Powerful Brands On Twitter

https://twitter.com/socialbrands100

Fortune 100 companies embracing social media; especially Twitter

http://moblogsmoproblems.blogspot.com/2009/08/fortune-100-companies-embracing-social.html

100 Best Twitter Feeds for Savvy Business Students

http://www.associatesdegree.com/2009/09/14/100-best-twitter-feeds-for-savvy-business-students/

Chinese Twitter-like service passes 100 million users

https://en.wikipedia.org/wiki/Sina_Corp

Twitter’s Plan To Analyze 100 Billion Tweets

http://highscalability.com/blog/2010/2/19/twitters-plan-to-analyze-100-billion-tweets.html

Top 100+ Job Search Hashtags on Twitter

http://www.careerrocketeer.com/2009/09/top-100-job-search-hashtags-on-twitter.html

100 Most Popular Twitter applications

http://friendorfollow.com/twitter/most-followers/

100 Extremely Creative Twitter Avatars

http://www.hongkiat.com/blog/100-extremely-creative-twitter-avatars/

100 Most Powerful Women / Sistas On Twitter

http://twittergrader.com/top/women
http://heavenhollywood.wordpress.com/2010/08/26/100-most-powerful-sistas-on-twitter/

https://www.google.com/search?q=Women+Twitter

Twitter for Social Entrepreneurship

http://www.socialedge.org/blogs/the-edge/twitter-for-social-entrepreneurship-the-top-100-to-follow/
http://www.socialearth.org/top-100-social-entrepreneurs-businesses-and-ideas-on-twitter

Top 100 Photographers on Twitter

http://www.chillisauce.co.uk/blog/top-100-travel-photographers-in-the-world/

100 Best Twitter How-to Tips

http://www.danhollings.com/twitter-howto/

Twitter users You should follow

http://twitaholic.com/

100 most popular sites

http://momb.socio-kybernetics.net/labs/twitter-50

100 technology experts / Geeks on Twitter

http://www.techrepublic.com/blog/hiner/directory-100-technology-experts-on-twitter/1860
http://www.wired.com/geekdad/2009/05/100-geeks-you-should-be-following-on-twitter/

100 Ways to Teach with Twitter

http://www.emergingedtech.com/2010/02/100-ways-to-teach-with-twitter/

Twitter's Path To 33 Billion Tweets Per Year

http://www.businessinsider.com/chart-of-the-day-twitters-tweet-explosion-2010-9#ixzz1GihTBhvY

Path Is the Opposite of Twitter

http://mashable.com/2010/11/15/path-launches/

Leading media publications go the Twitter way

http://www.exchange4media.com/e4m/news/fullstory.asp?section_id=5&news_id=35481&tag=31185

Twitter Search / Psych

http://search.twitter.com/
http://tweetpsych.com/

How Microsoft Xbox Uses Twitter to Reduce Support Costs

http://www.socialmediaexaminer.com/how-microsoft-xbox-uses-twitter-to-reduce-support-costs/

By The Numbers: Twitter Vs. Facebook Vs. Google Buzz

http://searchengineland.com/by-the-numbers-twitter-vs-facebook-vs-google-buzz-36709

12 little-known facts about Twitter

http://www.cnbc.com/2014/03/21/140-things-you-dont-know-about-twitter.html

Twitter For ITunes

http://itunes.apple.com/us/app/twitter/id333903271?mt=8

Twitter Wiki / Reviews

http://en.wikipedia.org/wiki/Twitter
http://www.blippr.com/apps/336651-Twitter

Twitter / Way / Counter

http://twitter.com/
http://uber.la/twitter_way/
http://twittercounter.com/