Heh, you evidently didn't look very hard.
Traders Rules
*PMs (Private Messages) and E-mail must be enabled in your profile. Other users CANNOT see your e-mail address, this just allows another avenue for contacting you in a deal. By default it is set to "no" in the "user cp". Just click on the button then enable it in the "Edit Options" link under "Hide Email Addres?"
*No links to auctions or other sites. Post or c&p your FS/FT/WTB content into your post.