TwitterFone is a great application for all of those Twitter users that allows them to dictate text messages via their mobile phone to be sent out to everyone on their Twitter social network. Users speak their message into their phone and it shows up as text on twitter.
Pros: Ability to update Twitter from anywhere, easily turns voice to text
Cons: occassional mistakes with voice to text translation, site is sometimes lagging
WhoShouldiFollow looks at who your Twitter friends follow to suggest new people. By adjusting the sliders on the results page, you can give greater preference in the ranking to less popular Twitter users, or those who are near you.
The algorithm is an item-to-item collaborative filter, somewhat similar to how Amazon makes recommendations.
TweetCube allows Twitter users to share files, whether it be images, videos, music, or other with a few clicks of the mouse. \nTweetCube is completely free, however the maximum file size you can upload is 10mb. There is no limit to the amount of files you upload, however files are deleted after 30 days.
Ping.fm is a simple tool that eases the burden of having to update all of your favorite microblogs at once. With the ability to update from anywhere, users can update Twitter, Facebook, Blogger, Myspace, and many others by simply posting a message with Ping.fm. Posting a message here will send a message out to any selected microblogs at once saving much time.