I'm in the process of developing a photon-like upload mechanism for Picasa. Okay, now that I have your attention...
The metaweblog.newMediaObject function appears to be broken in WP 2.0, which is what I'm primarily developing on. It doesn't have the function wp_upload_dir(), which I assume is because of the new paradigm for uploads associated with posts. At any rate, it's broken.
On WP 1.5.1, the newMediaObject call goes through okay, and it saves a file on the other end, but it doesn't seem to be base64-decoding it.
Are these issues with know workarounds?
Thanks,
Mike