They are posting random comments that make no sense on other peoples posts. They might need removed from the group.
What they are trying to do is get track backs to their website.
When you see the comments flag them so they can be removed. Then one of the Admin People will simply shut down his account..
Its a bot. Happens all the time on gaming forums. Could be done for hits or just a low grade hacker seeing if they can do it. Prolly chose this website because security/monitoring may be a little lax compaired to other sites.
Thank you gentlemen makes a lot of sense now..