At the risk of being pedantic, shouldn't he be calling himself the "Spelling Nazi" or the "Orthography Nazi" if he is checking spelling ;-)
Orthography
An orthography is a set of conventions for writing a language. It includes norms of spelling, hyphenation, capitalization, word breaks, emphasis, and punctuation.
A name change would be positive and while doing the change how about OrthographyFriend? That would represent a kinder gentler bot!
Commentators on network news routinely say things like "between you and I."
That or "between I and you" should make one's ears hurt . Or "who did you vote for?" instead of "for whom did you vote?" Nonetheless, I find it a bit much to spell check and grammar police blogs.
I actually heard a politician say, "Nobody hates terrorists more than me!" :-)