TwitterWhere lets you generate an RSS or XML Feed to filter out Tweets around a certain area. Just enter a city, state, postal code, choose the range of miles you want to include, and hit the button. You'll instantly get URLs to add to your RSS reader.

Note that the only Tweets that show up in our feed are from profiles available in the public timeline and that have a valid geographical location.

Twit Rank is a list of the top 150 twitterers by:

- Followers - How many people are following each twitter account
- Updates - How many updates has each twitter account made
- Following - How many people is each twitter account following or getting updates from

There are updates several times per day so check back often and see where you and your twitter friends rank in the twittersphere on Twit Rank!

This site shows what people are saying about the iPhone on Twitter, and where they are saying it.

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.

A site to check the frequency of terms on popular web 2.0 sites. Currently they have Digg, Twitter, mySpace, Flickr and youTUBE.

The Vision - To create a search engine strictly for indexing and searching Twitter posts.

The Solution - TwitterTroll.com was born. We are not trying to compete with the big boys, but simply provide real-time search for Twitter posts. TwitterTroll.com is simply a resource to help you find new Twitter friends!

TwitterTroll.com indexes tweets from the public timeline. We index a large majority of tweets, but can not guarantee all tweets will be indexed.