Tim Bray noticed that spam blogs have just exploded - here's an example - look at the latest results for this Feedster search feed for Smalltalk. There have been 76 new items (some dupes) since midnight. Of those, 4 are actually what I'm looking for (references to Smalltalk, the programming language). Two are false positives, references to "smalltalk", as in speaking. The other 70? All splog results.
It's clear that these are bots at work - the Blogspot templates are the same for all the results. The funny thing is, the products and services being flogged aren't your typical pharmaceuticals and porn - the "offers" are all over the map. This seems to be a well organized and coordinated attack, using a boatload of fake blogs as the delivery vehicle.
Looks to me like it's time for Google to step up.