I created a forum spy using sajax. It caches the results every 10 seconds using crontab (for better performance, instead of running a query for each user viewing the page).
I am NOT a vb coder though, and would not know how to set this up for a release. If an experenced VB coder wants to work with me I'll gladly set something up for a release.
Here is a VERY basic rough draft:
http://www.friendcodes.com/forums/view.php?pg=priv_spy
This is hardly my peak time, check back in the evening hours to see it in action.