Since the start of August 2007, I’ve noticed the number of spam comments being captured by my blog spam blockers (akismet and bad behaviour) has decreased significantly.
Bad behaviour would easily block 500 – 1500 spam comments per week… now it seems to block 200 – 300 comments.
Akismet is similar: from 20 – 30 per day, down to 5 – 10 per day.
Admittedly, my website traffic has decreased slightly (about 20%). So, all I can think is that the spammers are busy brewing up some smarter spam bots. The drop in spam activity is also resulting in a drop in my website “traffic”… but then, it was traffic I never really wanted anyway.