I'm guessing if you block them like normal, you won't get PMs from them, but I'm not 100% sure.
In order to block someone you just go to the bottom of one of their posts and click the "block" link. That will block you from seeing any of their posts (original posts or replies to your/other people's posts), unless someone quotes their post in a reply.
Re: how do i block some people from sending me pms?
I'm guessing if you block them like normal, you won't get PMs from them, but I'm not 100% sure.
In order to block someone you just go to the bottom of one of their posts and click the "block" link. That will block you from seeing any of their posts (original posts or replies to your/other people's posts), unless someone quotes their post in a reply.