So I am an active user of iPhoto and Picasa on my Mac and PCs. I have many photos on the applications and as you may know these applications store photos in odd ways - they don't just have a folder they have original files, temp files and whatnot.
I'd love a mesh plugin for both of these applications that would sync my libraries - iphoto to iphoto, picasa to picasa, iphoto to picasa, and store the photos online as a backup.
Sounds like a good suggestion - please go ahead and add it to our Suggestions sticky (you may even want to open a Feedback item through Connect and post the Feedback ID in the sticky so others can vote on it). (You might be interested in visiting our developer forum as well.)