Originally posted here by Negative
Here is a summary of how mnstrgrl feels about this:

The post count is related to each userid, and is not produced by counting the user's posts every time it needs to be displayed. Excluding forums from post counts would require some hacking of the thread/reply saving code.
I would imagine that the reason for that is purely down to speed concerns, because generating the post count dynamically would require a fairly intensive database query, which would have to be performed around ten times on each view of a page of a thread. Not good!

Also, I don't think you can do this, unless you do it retro-actively. This requires a re-calculation of all users' post counts, and all users' antipoints.
That wouldn't actually be too difficult. Take the site offline for a couple of hours, then loop through the posts and set the user's post count to the sum (using the SUM() function in MySQL, if that's the DB server that's in use) of all the posts matching the user ID where the forum_id isn't equal to GCC (say 5), tech humour etc. Same for antipoints. It would require a lot of database activity, but once it was done it'd be done.