Oh yeah. It's gotten completely ridiculous. In the past couple of days I think about four bots signed up, all of which came from Amsterdam and Russia (hence the extremely heavy blockage of entire class A and class B blocks -- I don't need web servers accessing my forums, after all).
There was one registration that was either registered by a malware infection or someone working out of their homes that appeared to be from a residential hostname (the *.corbina.ru block, to be specific). Since I don't know anyone in Russia, and that area is a haven for spammers, I blocked it. Blocking *.ru, *.nl, *.cn, and *.cz is kind of tempting at this point as well. Harsh, yes, effective, very yes.