Agree, should have said "Building a tweetmeme of its own for every city". This is the first release, we are taking the no. of cities to 50+ with the next release in 6-8 weeks.

The focus till now has been on building algorithms that are kickass enough to filter junk out and keep only useful stuff in. Still WIP I know, but what do you think about that. Take http://frrole.com/san+francisco for example.

The suggestion is that the user should be able to enter any city, not just use the preset ones.

Thanks, that is how it is intended to be in the longer term. But going to hit Twitter's rate limits very soon and access to full firehose is way too costly for a bootstrapped startup.

Hope to scale to 50+ cities by ourselves, validate traction with users from those 50 cities and then look at really big scaling, if it is getting some love:)

Also, relevant tweets for New York and San Francisco are already pretty easy to guess for anyone following technology news or national news. Chicago, Atlanta and Miami had much more diverse results and organic feeling results - provided tweets that felt characteristic of those cities.

And yes, about geo location, that is built in. But if you match neither the city nor the country, then it takes you to a global default.

just a mashup like Twits in London: http://tlondon.linkstore.ru