Russians!!!

I’m getting huge numbers (like 100 a day) of Russian email addresses, and other obvious spam addresses, signing up as a user for my site (http://www.triplepundit.com).

None of them confirm, so it doesn’t really seem to be causing any problems with spam. But it is clogging my datatbase with fake emails.

This only started happening recently, as if my reg page has been “discovered”. Are there any obvious holes on my site that I’ve left open here? Any way to quell the nuisance?

(no offense to my honest Russian friends)

Thanks!