UPDATE 01-04-2010: Unfortunately Google has changed the URL scheme for their picasaweb videos so that they expire in 11 hours, making these instructions pretty useless now :-(. Fortunately, videos embedded before this change still work (e.g. the ones on this blog), but I do not know if there is a way to look up these old style of URLs (and I imagine Google wants it that way).
As a follow-up to my previous post about getting the address for a PicasaWeb video, here is an example of a PicasaWeb video embedded in a WordPress.com blog:
Note that I did have to cut the phrase “&autoplay=yes” off the end of the original address so that it wouldn’t automatically start playing.
In WordPress it is easy to create the code for the video; you do it in this format:
[ googlevideo=http://video.google.com/googleplayer.swf?videoUrl=http%3A%2F%… ]
(Just leave out the space between the brackets and the rest of the text).