Finding it hard to see where the twittering is mutual? Don’t trawl through your follower lists, just use Friend or Follow.
The Twitter 100 list was written in 2010. It is no longer being updated.
41Friend or Follow
Ranked #41 in Twitter 100
42Twitter Tip: Keep the noise down
It isn’t necessary to update your Twitter account constantly; a little bit of space between tweets never hurt anybody.
43Twitter How-to: Use Twitter search
With Twitter’s endlessly useful built-in search function, look for tweets about your favorite people and topics, and find new people with similar interests.
44On Twitter: Barack Obama
Barack Obama made social media history by becoming the first United States president to use Twitter.
45Twitter Lingo: FollowFriday
Don’t have a clue about who you should be following? Tune in to others’ recommendations during this weekly Twitter meme.
46Trendistic
Whether for business or for fun, Trendistic lets you keep track of your favorite words over time to see how often they’re tweeted about.
47Digsby
Ranked #47 in Twitter 100
If you like feeling connected, Digsby just made it easier to centrally manage all of your online social media accounts.
48Twibbon
Quickly edit your avatar to show your support for your favorite cause — without sending a single tweet
49Twisten.FM
Twitter and tunes, happy together. With Twisten.FM, you’re able to turn Twitter into a full-fledged tool for music sharing — and discovery.
50Twitterrific
Design snobs will revel in this sleek and shiny iPhone and iPod Touch app that’s full of handy Twitter features.