Fighting Splog has an explanation for this weekends outrage about splogs. It seems there was a single splogger who created tens of thousands of splogs. Presumably these splogs also happened to target popular bloggers names.
He, like most, puts the blame squarely on Google:
I wonder if Google will finally do something about splog problem now. Honestly I really doubt it and here is the reason why. Currently Google makes money whenever spammers makes money.
I think that has been a lot of the problem, Google has not really had any incentive to do anything. Hopefully, now that the splog problem has gotten more attention, Google will not be able to avoid doing something this problem.
Google does say they “Do no evil”. Splogs are evil. They need to do something about it.