"Recommendations and likes (from Facebook) or other places are hard to artificially jack up" If recommendations and likes are added to Google's algorithm, peop

"Recommendations and likes (from Facebook) or other places are hard to artificially jack up" If recommendations and likes are added to Google's algorithm, people will find ways to artificially jack them up. For example, marketers have aligned networks of Digg users to increase the amount of Diggs. I find it hard to believe that Demand Media and others will not be able to artificially inflate Facebook likes.