Snap2Twitter, from the company SnapMyLife, is found in the BlackBerry AppWord and will allow you take take pictures with the camera in your device and send to Twitter with comments and a link back to the photo. They have a giant FAQ on all the capabilities the software and site offer, which was comprehensive.
It seems they support most every mobile device with a camera and all is aggregated into their site which is nice. You do need to register for an account, for free, on their site also.
Some users reported data errors until they set their APN information correctly.