Slashdot is reporting that WordPress has been “banned by Google for spamming”. Apparently, the blogging system was inserting hidden links to junk content that featured high-paying AdSense keywords. Cited examples include “mesothelioma”, “diabetes”, and “debt consolidation”.
I know that Matt Mullenweg is in Italy at the moment, so he may not be able to respond to this claim. I can't believe there has been any attempt to do anything fraudulent, though.
Update: Matt explains what happened.