The kind of search I'd like to see is being able to find all people interested in __________ within __ miles of where I live. This would be very cool, but then it occurred to me how hard such a search could be. Still, I know that a lot of people who do regional communities would love to have this feature.
Well, to facilitate things, I have poked around for solutions. There is a good article on how to do this here and here... and even free latitude/longitude data here to help out. Yes, the data is only for the U.S., but I suspect that we could get similar data for other countries and add support over time. Infact, there are lists of such data available here.
Thoughts, suggestions, etc?