When I click that, I get "You don't have permission to access this." or something like that.things recently changed so I dont know if the help section was updated.
If you click on someones name you get to the profile page for the person and then you should see a "send me a message" button. Try that!
Oh, I was able to send messages. I got through this though by using Compose New.sorry I didnt look at your profile, looks like you are CAG newbie and I dont think a newbie can send messages until some time passes and you are no longer a newbie.