Akisimet ought to automatically ban any posts or comments coming from the domain .ru. Virtually 100% of everything sent from there is spam. Not 99.999%, but 100%. Completely banning that domain (at least until they get their act together) would cut down on a great deal of spam. Kinda like automatically filtering any message that contains the term "Nigeria", or "make money fast", or "this is not a scam". Block whole domains until they can prove they've got a handle on outgoing spam.
The blog I need help with is davestuff.wordpress.com.