THIS WEEK RESULTED in me manually cleaning a minimum of 300 comment spams from my moderation queue during each of the past four days--that's more than 1000 unwanted spams in a work week. That's more spams than I've endured in three years with Typepad. I resorted to a manual clean-up task since it appeared that a combination of comment moderation and manually blocking unwelcome IPs was working. Sometime later this weekend, I will reopen my comments and see what happens.
I think the internet needs to be a conversation and online comments play an important role in the process. It hurts the medium when spammers interfere in the conversation.