4. Registration and Account Security
... 2. You will not use your personal profile for your own commercial gain (such as selling your status update to an advertiser).It doesn't ban advertisers from creating their own pages with their own status messages.
TechCrunch points out that the move puts Facebook in a contrary position to Twitter, which allows sponsored posts. (In fact BNET generates a healthy chunk of its readership by syndicating our headlines into Twitter. BNET writers such as myself might be banned from doing the same in Facebook under the new rules, given that we do receive a "commercial gain" from any traffic that the links generate.)