Alright anyone who has a second... http://www.retweetradar.com/ "Reetweet Radar" captures retweets for the last 3 hours extracts key terms and displays a cloud so you can glean information others think is interesting on Twitter. -- This is very raw and done for fun, no warranty on it working when you get there! ;) - Ben Hedrington from Bookmarklet

Using "Yahoo Term Extraction" API... pretty interesting. A fun little ~1 day project. Maybe it'll lead to something else... :) - Ben Hedrington

"google app engine + twitter + yahoo term extractor + jquery = retweetradar" - Ben Hedrington