Unless I missed it I am surprised to not see a thread for this. Opera 3 was just released yesterday and supports file uploading to MySpace and others that normally require a PC to upload files, RSS feeds, an option to load images in lower quality for faster loading, etc...
I just downloaded it and havent played with it much. I heard it does and doesnt work with MySpace but I have not tried it myself yet.
http://www.operamini.com/