TwitSeeker is basically an alternate search engine for finding twitter.com users - "twits" - and browsing the results all in one combined control panel. It works by using the twitter.com API, and finds twits not by what's posted in their bios but rather based on what they've been tweeting about lately. It uses a custom tag cloud generator written by the author, and was created as an experimental tool to help users quickly build up a twitter community around specific topics.
Basically we're at the mercy of the twitter.com search API; whatever it finds based on your search criteria is what twitSeeker has to work with. The location-based search terms seem especially "iffy" - but I've included it for you to play with anyway.
The profile search option searches for twitterers by matching against both their 'bio' description and their location. Whenever twinfluence.com and twitseeker.com identify a twitterer, they add it to our internal database of all Twitter users, or update our profile records if that user is already listed. This way, the database will grow organically as more people use twinfluence and twitseeker. Currently, we have 1,392,302 twitterers in the system, and it's growing - which, depending on whose estimates you use (the Twitter.com development team is keeping quiet on the subject) is about 10-20% of all twitterers. Unfortunately, that means that poorly connected twitterers, or twitterers with few and infrequent posts, are most likely to be not in our database.
Well, twitseeker requires your creds in case you want to use it to "batch follow" the people you find.
In my copious spare time, I do plan on making twitseeker better, guided by complaints, cheers, and helpful suggestions sent to me via twitter. Thanks for the replies, everybody! No guarantees when I'll get to them (paid work comes first I'm afraid), but here's my plans:
A quick "thanks" to Shawn Olsen for his hovering CSS boxes code. Now if I could figure out how to make it pop up instantly, and not time out.