Ok, I've submitted my site www.fpsgaming.us to about 225 free directories. Now I just started a forum, and the address is http://forums.fpsgaming.us OR www.fpsgaming.us/forums. So if I use the forums.fpsgaming.us can I submit it, or is it still part of my site?
So do you think it would be ok if I submitted it to the same directories that my website is listed in?
Some directories specifically exclude subdomains. Sometimes they want a reciprocal to accept a subdom, or even charge for that. Other than that you should be fine! In my SEO directory I do just that. I accept subdomains and inner pages too, as long as the link brings visitors where they want. For now I only charge for Featured Listings (1$) but not for non topdomains, so you would be safe. In your case actually, a forum should be considered a different link, simply because it's obviously....a forum! Good luck!