MyBB Community Forums

Anyone know if there is a plugin that would allow members on mybb to tag or alert a member to a post..?
For example if I wanted to notify a member of a post I made that they should take a look at or respond to?

Tried it but it doesn't work..

It does, we use it on http://wweforums.net and it works flawlessly.

strange.. I'll try it again, I followed the directions I thought

Apologies for waking an old thread, but is there an updated 1.8 version of this anywhere, or something else to do the same job? I've searched around and not found anything so far.