Some time ago I downloaded a large database of cities around the world, with their geographical locations (latitude and longitude). Now that I'm writing an article on the eZ components for php|architect I was going to demo a small import script and a SOAP service that uses this information. But I didn't have the vagest clue where I got this database from, and what its license was.
What I did remember is that I read it somewhere on planet PHP and with some backtracing I found Henri's post which lead me to the site of MaxMind . This company provides a list of a few million cities including geo-coordinates. They provide it under a very nice license as well. In a few more days I'll be publishing the client so that you can use this Web service as well.