Usually you are limited to the online forms, which I too have found not to work, but occasionally there is a public e-mail address for someone in the department/field that handles it. (For instance, messageboards-at-cnet-dot-com is used for these forums.) Other times I've just had to have the message forwarded. In short, what is the problem/intended recipient?
John
Is there an email address for contact CNET? I've tried 2 times tosubmit my request thru their Support form, but the system won't take it.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic