Need mod to enlight me why thread was closed

Here
http://forums.digitalpoint.com/showthread.php?t=895930

I somehow read most of the rules. The thread is in the appropriate category and from what I can tell should have been no problem with it. However mods seems to have disagreed and above all gave me an infraction point. Guess I have deserved this from their point. But what is the reason if so, maybe it was a misunderstanding and it should be open again ? Just asking because I offered a free service in the freebies section. I didn't ask people to join under my affiliate link and so on...