[darkman121]

He is sending me random PMs and linking me to his sales thread so that I buy his product

Is this allowed at all ?
If it isnt, where to report it?

[big dick rick]

read the rules and decide for yourself.

"We recommend you take the time to read the HF Help Documents section. The answer to your questions should be contained in there."

[⭐ Social Panel]

I'm pretty certain that it is allowed. If you feel annoyed, you can put him on your ignore list.

[Mr Kewl]

First ask tell him nicely you're not interested if he still continues to PM you, add him to ignore list. If he's spamming everyone with same messages. PM omniscient with proof.