PicasaWeb APIs vs. apps

Still haven't had any time to dig into the PicasaWeb API, just what i played around with the Python client library a couple of weeks ago. But what i want is just a very simple upload app for Linux... isn't there anyone? The absolute bestest would be the DigiKam plugin; is it going on? couldn't find any sign of advances there. Also, does it support uploading just lowres versions (like Picasa does)? and keeping track of what's already uploaded (like Picasa doesn't do)?