I do not use the sites listed in the article, but I have found that Epicurious (http://www.epicurious.com/) has plenty of bad recipes that are rated as such. I have had good success following the ratings and checking the comments on the recipes before trying them.

Of course, with any crowd sourced system it is good to take the time to really read through who you are getting your trusted advice from. I still remember reading a review of a Korean restaurant on yelp that had two or three one star reviews because "they did not have sushi".