Yesterday I implemented a new version of the reply subsystem on this site. Immedialtely after I started getting hundreds of bogus comments. All spam for some lame e-travel site, or some online flower shop. All the replies were from different IP addresses, but all pretty much had the same content. Some bot network must just reply to blogs all day long to spam certain URLs. Apparently perturb.org flew under their radar until yesterday. Needless to say I deleted all the comments and put a blacklist system in place to make sure no one else can comment spam.