Twitter has finally started rolling out the retweet feature. It also includes the ability to undo a retweet.

Microsoft has unveiled the first major redesign of MSN in a decade. The new design conforms to modern web design practices and focuses on providing a simple and clutter-free experience.

Mobile Email Device Manufacturer Peek has joined hands with Twitter to bring out the world’s first Twitter-only Mobile Device: “TwitterPeek“.

TwittMyFile is a handy application, which will allow you to upload and share files on twitter using FileSocial. You can easily drag and drop files and share them on twitter.

Twitter users have created more than 6.5 million lists on twitter. This is definitely a huge thumbs up to the new Twitter lists feature.

Twitter has a Halloween surprise for its users. Just type #trick or #treat in the web interface and you will be treated with some Halloween Goodies.

Twitter Lists is a new Beta feature of Twitter launched for Twitter users. Here is a tutorial for creating Twitter Lists. With the use of Twitter Lists, one can make groups of similar users’ timelines so that all those tweets can be read in one page. Twitter Lists is the first organizational feature added by Twitter

TwiBack is a neat Twitter application to automatically rotate your profile pics and background images at your specified time.

ScreenTweetr is a a very useful application which will allow you to quickly take screenshots, upload it, and share it on twitter.

A few days back Google announced a search deal with Twitter and so did Bing, however, unlike Bing, Google was still to come up with the actual integration. To my surprise, since the day Google announced their deal with Twitter, I have been seeing some web alerts for twitter tweets.

TweetDeck tips, tricks and use cases. Some very useful and handy tips to get the best out of TweetDeck, a Adobe Air based client for Twitter, Facebook and MySpace.

Google has also made a official announcement about a new tie-up with twitter to include tweets into Google search results.

The search engine war is on! Earlier today we revealed that Google may be planning on launching its own music service. Now according to latest reports, Microsoft is expected to announce nonexclusive deals with both Facebook and Twitter later today.

Jotabl is a web application that lets you create Twitter based shout box on your website or blog. Visitors to your website can simply tweet their thoughts using the shout box once they are signed in to Twitter.

Twitter the micro-blogging network everyone loves and hates, and who 60% of users hardly use, have crossed a new milestone by registering 5 Billion tweets, that’s “5000000000” to be precise.