You don’t get much shorter or simpler than this URL-shortening service — and that’s definitely a good thing.
The Twitter 100 list was written in 2010. It is no longer being updated.
32Echofon for iPhone
The free iPhone and iPod Touch app Echofon offers all the necessary features of Twitter while improving some of them.
33Twitter Tip: Keep it balanced
Try to maintain a reasonable balance between how many people you follow and how many people follow you.
34Twitaholic
Twitaholic accesses Twitter’s database statistics to display the most popular users, according to number of followers, friends and updates.
35Twittervision
Twittervision displays real-time Twitter posts on a geographic map of the globe, allowing users to instantaneously view tweets being generated internationally.
36Twitter How-to: Customize your profile
If you want to get noticed on Twitter, you’d better make sure your profile is optimized to work for you.
37twhirl
Ranked #37 in Twitter 100
Twitter is great, but if you need support for other microblogging services as well, twhirl will keep you up to speed.
38On Twitter: The New York Times
The well-known and highly-respected newspaper offers customizable news with content that’s split among dozens of different sections.
39OpenBeak
Who needs an iPhone when you can get all the features of Twitter on the Blackberry that never leaves your hand?
40hashtags
See what everyone’s tagging about on Twitter with this feature-filled site that’s dedicated to the twitterverse’s ever-changing metadata.