Thank you! Yeah, our users are great at finding comment and entry spam, and we're starting to make inroads on the backlink/SEO optimization spam. (We got on a few lists as a place for backlink spammers to leave their backlink spam and some of them are really really good at looking like real acocunts. It's kind of eerie sometimes how good the most legitimate looking 25% or so of spammers is at looking indistinguishable from the most sketchy 25% or so of legitimate use.) We've really tuned up our detection ability, and now we're starting to think about all the ways we can make it less tempting for them to create the accounts in the first place.