Short answer: whichever one happens to be given more weight by the major search engines. Long answer: they’re both the same thing, so you should act accordingly.
Social media is basically a popularity contest. A Facebook “Like” is an explicit vote for popularity; and of course you can’t get into a social circle without being accepted, which is effectively a digital way of saying that you are cool enough to join the gang. The only reason the social media stream isn’t accused of behaving discriminatorily is because there are so many social circles for so many different things that everyone is seen as cool by someone. Continue reading Authority vs. Popularity in Search Engine Rankings. Which is More Important? »
