For that manner, this will work on pretty much any phpBB-based forum.
IMPORTANT NOTE: This is an UNSUPPORTED hack. I will post instructions here, but I provide NO support on this. Do NOT pm/im/email me asking “how do I install Greasemonkey?” or anything like that. This is only to be attempted if you are very comfortable fucking around with Firefox, etc.
That being said…here’s how to do it:
First, install the Greasemonkey extension into Firefox. Once you have installed it, you need to install this user script (right-click on the link and say “install user script”). Once you have done this, refresh Yehoodi. Next to user’s names by their posts, you will see a little “x”. Click it to ignore them.
Again, for some reason, the quoted parts of their posts will not be ignored, but the rest will. Good luck.