Social networking site Twitter announced Thursday morning that it will launch its own URL-shortening service, and start tracking how individual users use the web.

Millions of Twitter users woke up on Thursday morning to a personalized email from the micro-blogging website.

While also making changes to the way users' passwords are handled, Twitter also announced the formation of a new URL shortening service that they've dubbed t.co. Set to compete directly with other URL-shortening services like tiny.url and bit.ly, t.co will allow twitter users to compress extremely long web links into shorter, easily sent packages.

Facebook introduced yet another exciting feature of you connecting your AIM & Facebook account so that you can stay tuned in to whats  going on in your  friendly circle.

The feature allows you to:-

Hot Potato a social site announced the deal on its blog Friday, 20th/08/2010 "Today, we’re thrilled to announce that some of the features and thinking behind Hot Potato are going to be exposed to a much larger audience: We’ve been acquired by Facebook."

Facebook's main aim of acquiring Hot Potato help further its move into location-based services that they have just been introduced.