I don't know if this has anything to do with anything, but ever since I've thought these CT insults (THEY ARE INSULTS NO MATTER HOW FUNNY THEY SEEM AT FIRST) have gotten way out of hand (about the end of January), every month has had about 40% of the new members as the two months that this trend was not the case.
I'm not sure if the correlation is actually there, or if I'm obfuscating this slowdown with something else, but I'm just throwing things out there. S'all.