Some related posts from Technorati and Google.

[Opengardensblog.futuretext.com] Learning from Plazes - location based services: Plazes takes it to the next level regarding location-awareness and implicitness. The Plazes you are frequenting are actually a much better filtering system and common denominator than explicit connections like "he is my friend".

Reflected tags on Technorati: Blog, Blogger Con, 2800, Geolocation, Launcher, Hasselt, Geotags.org