Google +1's Correlation with Higher Search Rankings 13 years ago
Just a thought: When publishing correlation articles, maybe responsible authors should set up some kind of verification system where the reader must demonstrate that they understand that correlation does not equal causation before they are even allowed to read the article.
Otherwise, we end up with all these knuckleheads running around saying "Moz said that +1s are the key to high rankings and you have to have lots of them! Who wants to buy 10,000 plus ones from me?"