Cinematography.com can now keep track of the cameras you own and use so that other members can search and find your contact information based on that info.
Click your name on the top-right of the forum and select My Profile then Edit Profile
Scroll down to Profile Information and type your camera model info into the My Cameras box.
Save the changes.
Combined with the Member Location feature that we've always had on the forum, prospective gear renters should be able to quickly search and find an appropriate camera in a specific market fairly easily.