<p>Does anyone know of any good math forums?</p>
<p>The Art of Problem Solving (just google it)</p>
<p>artofproblemsolving is excellent. AoPS is so comprehensive...</p>
<p>AoPS is probably more up your alley (I sometimes lurk the Michigan private forum), but there's also <a href="http://www.ocf.berkeley.edu/%7Ewwu/cgi-bin/yabb/YaBB.cgi%5B/url%5D">http://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi</a> which is for (mostly mathematical) riddles/puzzles has a rather intelligent userbase and is worth mentioning.</p>