Many people doubt whether it is right or not that Google punish webmasters who sell links on their websites. I also doubt this. Google updated page rank again two days ago, of course many websites were punished by Google. The page ranks of many websites went to zero, even John Chow went down to 3 from 4. This is a big action Google has taken.
Nobody knows what will Google's next action be. The bad news is Google killed some innocent websites. They receive a lot of complaints. So how will Google deal with such things? Will they continue kill people in order to dominate internet advertising marketing? Let's wait their next action.