Video source: How do you rate links from sites like Twitter and Facebook?
Original Article: http://googlewebmastercentral.blogspot.com/2010/01/answering-your-december-grab-bag.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+blogspot/amDG+(Official+Google+Webmaster+Central+Blog)

Points of interest:

1. Links aren’t any different if they come from .gov or .edu. “It’s not like a link from an .edu autmatically carries more weight.” (1:58)
2. Most links on Twitter are nofollow. (We knew this but it’s worth mentioning again.)

I noticed that he didn’t mention links from Facebook Fan Pages, but he makes it pretty clear that all links are treated equally from the outset, but then Page Rank is applied to determine the linking site’s “reputation.” Keep this bit in mind people. It’s not always the number of links you have, it’s the quality of those links. You dig?

(for the experts out there… you may already know all this. however, this is core information that bears repeating for others out there who are just getting their feet wet. thank you for your understanding.)