Is a twitter API experiment by Michiel Berger. Twitstat isn't even beta yet.

Filter on user or tweet content. Click the RSS icon to get that search as RSS feed.

That is about 60,000 new Twitter accounts per month. Not as astronomical as we would have thought but respectable for sure. Also it is reported that there are now over 340,000 public Twitter accounts.

Info thanks to our friends at Twitterfacts and Twitdir . Thanks for the update guys.