I’ve only started using MobyPicture.com for uploading pictures, thanks to the twitter application Gravity and thanks to @mathys and his MobyPicture config file, I can now upload Image/Audio/Video to MobyPicture using the Share Online application on my E71 & N95 8GB.
With MobyPicture you can set it up to post the image to multiple social network sites and media sites, I have mine set to post to Twitter, Facebook and Jaiku.
Install the config file by downloading using your phone’s web browser pointing at http://mobypicture.com/?nso
NOTE: When you register you need to use your mobypicture username and PIN. The PIN is the number in your Account or the number in the mobypicture email address for MMS (firstname.lastname@example.org)