You could just use the keyword spam hack and black list their key spam words for the said promotion they are trying to post.

That will automatically move their posts to the moderation queue, you can then spam ban the user accounts from that point.

Just moderate all new members. If they spam once, ban them. Works for me.

I'm just curious. Is it a case of forum war? (meaning members from one forum goes to another forum and troll/spam?) did something happen between your forum and the other forum?

as some members suggested, simply moderate the "new user" usergoup. You'll find out who's trolling. I had a similar issue when members from another forum tried to spam our site. I have never banned so many people at once..haha :D But in my case, the other forum admin was VERY helpful. He helped me get rid of trouble makers.

This mod says it is for 3.6 - will it still work for 3.8x?

We are not in a forum war, nor are any of our Members/Moderators. It is another forum that keeps bothering us, and the other forums site admin think it is all in good fun. It isn't his problem because we are not over their messing up his boards.

I told our Moderators, we are not going to particpate in such non-productive activites. I have a life and so does everyone else. So let us not waste our time by fighting back, especially if one of our Super Mods went to talk to their Root Admin personally and got told he didn't give a flip what his members do outside his boards.

Works fine on mine (3.8.3).

yes, compatable vb versions are stated in the modification. so far this mod is compatable with vb 3.8.x

besides i am using it with vb 3.8.4