Having a broken SSL, needed or not, makes people think twice about joining. You might want to remove the https references on the site.
There is at least one here:
http://www.m65.net/article-pages-abo...4-109.html#1_1
The visuals of the site read "http://www.m65.net/forums/register.php", but the underlying link is "https://www.m65.net/forums/register.php"
I had big questions after seeing the broken SSL cert.
Hope this helps improve membership stats.