Finding Decent Online HotSpot Maps for Europe?

216pi asks: "It seems that there is no good site where to post the data about my free WiFi HotSpot in Cologne / Germany. This one doesn't help (map is unusable), this looks nice but has no map, a good name is nice, but doesn't help if it doesn't contain any data and Telepolis (in English) has only blabla sites but without usable search function or map. Any suggestions, especially for Europe (and/or Germany)?"