Via Gregor:
Plazes is yet another social network (yasn), but this time, location based ;) Looks neat, even if the location detection launcher (or whatever it's called) didn't work with my 08/15 d-link wireless router. Therefore I'm currently “plazeless”, will check again in the office tomorrow.
Will see, if it's actually useful, or if it's just another hype (anyone remember orkut? ;) )
Update: It does work with Martin Pittenauers Native OS X Launcher. Thanks a lot ;) And here's my home “plaze”