Picasa Version 2.7, Build 37.29 - September 13, 2007

Added support for RAW pictures from the Canon 40D.

Fixed a case where certain RAW pictures appeared overexposed.

Full-screen preview using Ctrl-Alt now works again.

Fixed a case where uploading to Picasa Web Albums could result in an immediate "failed to connect" error.

Browsing through the geotagged photos in Picasa Web Albums

Google have released a mapplet, that you can incorporate into the "My Maps" tab of Google Maps, that allows you to browse the geotagged photos in Picasa Web Albums.

There are few hard numbers available for how popular Picasa Web Albums are, but Google claim that "Already, the Picasa Web Albums community has added map information to millions of photos from all over the world".

Since the Mapplet appears as one of the "featured content" links on the "My Maps" tab, you don't have to specifically add it - and thus you can get to see this info without being logged in.