Feature 1 - Face recognition: Though this feature was released on 9/02/2008, I noticed it only recently. Worth trying it!
How to use it?
Feature 2 – Email Upload: You can upload photos to your album by forwarding emails addressed to your picasa emailid. You will be able to add a picasa emailid on Settings page, under ‘Upload Photos by Email’ section.
Feature 3 – Meta tag info: I think this was there since picasa was introduced, but I came to know this only recently from one of my friends. I added few web albums and sent the links to my friend; he was able to tell the camera that was used to take the photographs, apertures, focal length etc. Picasa reads the meta tag info of the photo and displays on the right hand side of the photo under ‘Photo Information’, click link more info.
The opinions expressed herein are my own personal opinions and do not represent
my employer's view in any way.