But this isn't the first time a social network has teamed up with Skype. A quick trip through news archives shows that in October 2007, Myspace joined with Skype to provide free Internet phone calls to MySpace members.
At the time, MySpace boasted 110 million users.
Since then, MySpace has hemorrhaged members, and was sold late last month for a fraction of what News Corp. paid for it in 2005.
What do you make of this former partnership? How will Facebook's relationship with Skype be different? Leave your comments below.
Here's that article from 2007: