Picasa ads in orkut

Google was seen publicising About Picasa on Orkut. Picasa is a photo editing software. This was seen by many users mostly on the album page. The integration of such ads at Album Page is a really good marketting way to push Google’s product that specilizes in Photo organizing and editing. But this was seen by only some users . When they tried to check it out at some other page it didn't come . Probably Google is trying to sell Picasa through Orkut