Rated 2 out of 5 stars
Was able to log-in Flickr and Facebook, but not to Picassa neither Google (shows 0 files or folder)
Oow, I noticed that Fireuploader log-in to the websites via non-encrypted login pages :( That makes it a no-go for me, as I don't want anyone sniff my login and password. C'mon! And I can't edit the code since it's not even Open source, but proprietary software from Suchi Software Solutions Pvt.Ltd.(www.suchisoft.com).
This said, fireuploader worked in Firefox 9, after I installed the 'Add-on Compatibility Reporter'.