My friend Bre Pettis turned me on to a new Twitter visualization tool called TwitterSheep, created by Nick Bilton and the R&D lab at the NYTimes.
Using Twitter's API, it generates a tag cloud of terms used frequently in the profiles of users that are following you. My most commonly found terms include "social" "media" and "marketing" - I think those are pretty point on terms to describe the bulk of my Twitter feed content as well! I'm pretty amused that Bre seems to have found his way into my tag cloud too.

Quick Catch Up: Twitter is a free micro-blogging service that allows users to send updates, commonly known as "tweets." Tweets are text-based posts, up to 140 characters. Tweets are posted to the Twitter website via SMS messaging, instant messaging or a third-party application.
+ Follow me on Twitter
+ TwitterSheep
Link to original post by Tessa Horehled