The two companies formalized a relationship last October after months of speculation. But Wednesday some Facebook users reported seeing a "call" button on some of their friends profile pages.
But the suspicion is that Skype may be returning Facebook's favor of allowing the VoIP to integrate the Facebook News Feeds and phone book into its video calling software.
Skype may possibly be integrating its phone calling ability into Facebook's profile pages. The move would make sense and consummate a powerful union between the two companies.