At Menorca Tech talk, Loic Le Meur showed us how he used a wifi radio embedded within an SD card, that you can insert in a standard camera: then with a one-time config of the software on the web, it can automatically upload your pix to Flickr !
A new version is coming out too on June 6th. I'm getting the Share version. Now it also supports triangulation. I wish it supported GPS as well :) and they should be doing a deal with FON too !