PS: Don't bust your butt on anti-spam. This would best be handled by the SMTP mail server that's receiving the incoming posts destined for the forums. You'll end up re-inventing that
huge wheel, and the SMTP servers out there have all sorts of fancy and complex spam traps already. To them, the forums' email addresses are just user accounts to be protected just like any other "user".
I'd much rather see you work on the threading and HTML/bbCode functionality


I'm going to see if I can work out threading here, but my initial look is a bit overwhelming given that I'm not a PHP/VB expert. Wow.
I just donated $50 - money well spent IMO!