For now anyway.
A while back, Blogger did away with supporting Open ID for commenting on blog posts. The only options now are Google ID and anonymous posting. I allowed anonymous posting so as to not force Google ID on folks. However, in the ensuing weeks, I've had but one legitimate post from an anonymous commenter. Lately, the anonymous spam posts have increased, reaching multiple comments an hour at times. Sadly, it's apparent theses comments are coming from a single spammer, but that doesn't stop my email from blowing up. Sometimes the spam comments are mildly entertaining, the latest don't even have that going for them.
I've disabled anonymous commenting. I may turn it back on later. Or I might not.