Quick post to let you know about a new site called Tweetag that will allow you to browse through all of the public tweets published on Twitter in tag form. From the homepage you will be able to see the 40 most frequent topics being discussed all based around an automatic tagging system.

Clicking one of these tags will give you a detailed breakdown of links, questions and replies relating to your keyword search, which makes it really easy to find out what you are looking for and maybe find out stuff that you were not.