Ok I have a picture to help.
This is what the mod does. Say you created a thread in this forum.
Code:
http://example.com/forum/forumdisplay.php?f=7
The post you made in that forum is here
Code:
http://example.com/forum/showthread.php?t=316
The mod would then take that post created in that forum (only that forum, no other forums) and place a link to it in your profile and the user info(user info=when u make a post there is the user info next to it.)

This forum has the mod, the mod is the part that says "Trader Thread"
If anyone knows what mod this is please reply~!