I've seen the amount of spam caught by Akismet more than double in the past three days on many of the sites I manage. Akismet does seem to be working, but the number of moderated comments that are slipping through its net is getting really annoying. I'm seeing around 50 per day slip through Akismet on one site (but thousands more are being properly marked as spam).
I'm using reducer to firewall spammy IPs - a technique that generally works really well - but the IPs are changing so rapidly that it's affecting reducer's effectiveness.
Is anyone else seeing similar patterns?