https://bitcointalk.org/index.php?topic=177133.0You can only post in newbie region at first. After making 1 post and waiting 4 hours, you can make a post anywhere as you like (incl. the marketplace board of course), and you can send PM as well.
Newbie RestrictionsYou can only post in the Newbie and Local sub-forums till you have made one post and waited 4 hours.
You need 1 post to be able to send a PM.