Several years ago, I made a simple map of the hackerspaces in OSM, using the leisure=hackerspace tag. And it used XAPI. And XAPI broke a while ago. So the map didn’t update. In the last month about 10 people have emailed me to tell me it isn’t updating. Everyone must be looking at it now! So I’ve fixed it, and it should update now!

http://www.technomancy.org/osm-hackerspaces/