Only public albums are supported!
Method 1: Input a Picasa user name and click an album thumbnail
Method 2: Input a Picasa Album url (e.g. http://picasaweb.google.com/dreamer.guan/xGcOGG)
Method 3: Input a Flickr PhotoSet url (e.g. http://www.flickr.com/photos/28499207@N05/sets/72157614920319850/)

Description:	Embed a Picasa Photo Album in Google Wave
Author:	Genliang Guan, University of Sydney
Note:	This Wave extension is built with the support of Picasa Webalbum Integrator and jQuery Flickr plug-in