Pro: I agree with all of the positive comments and want to add.... Picasa integration is a huge time saver. It allows staff in a separate location to get pictures to me using Picasa's simple fast upload features. It avoids the problem of sending/receiving emails, downloading emailed pics, uploading to Joomla, etc. Thanks Phoca!
Con: Phoca could make it clearer where to find the Picasa user id and gallery name. These settings can be found in the URL when you are viewing the Picasa web album when not logged in.