So if Bing wants to rank Bing.com higher than Google.com on the keyword "Search Engine", all they need to do is to pay link farms to link to Google?
Like everything this could go both ways. If you penalize sites for having links from link farms, what is stopping your competitors from paying link farms to link to your website? or worse yet, some link farm owner comes up with an ingenious idea to hold other websites hostage until they pay up?
It would be more understanding if Google din't have any other resources on hand to make smart decisions but heck you guys have hands on realtime experience with most traffics via Google Analytics, Google Adsense and even DNS. All these resources and can't even distinguish a link farm from a legitimate site? Doesn't sound believable.