Given the vast amounts of bandwidth available on the Internet today, there's absolutely no excuse whatsoever for posting a low-res JPEG of an important image, and such posting can, and should be taken as a sign of deception, trying to conceal something.

Post the full file!!!

On the other hand, post the RAW file. For a 5.0 Megapixel camera, that's approximately a 4.3 MB file. Using Adobe CS, the resultant JPEG created to maximize the color depth and resolution for that file is more than 100 MB.

By contrast, the JPEGs stored in the camera instead of the RAW information do heavy compression, create numerous artifacts. That's why they're merely 2.3 MB in size.

Digital photography professionals deal in RAW format for a reason, folks. It's not as clear as the smaller JPEGs stored in the camera, but it embodies the FULL information as recorded/captured on the chip, and in a digital studie enviornment, provides the absolute best and most detailed final image with the least distortions and artifacts.

Bar none.