There is a nice interview on dpreview.com with David Coffin, author of dcraw.c, a nice little Linux program that decodes most RAW formats from digital cameras. Very cool and useful stuff. From the interview:
3. Are you ever concerned about the legal implications of reverse-engineering proprietary file formats?
If anyone sued me, I'd be the biggest free software hero since Jon Johanson. It's better for the camera makers to ignore me and hope I lose interest.
Heh. Rock on, Dave.