Reports surfaced today that Facebook could be interested in buying Skype. Reuters cites "two sources with direct knowledge" of the company's plans. Google had previously been rumored to be interested in the VoIP provider. The Reuters sources confirmed separately that both Google and Facebook are interested in Skype.

Skype recently delayed its IPO, which was expected to raise about $1 billion. Skype would sell to the highest bidder in the $3 billion to $4 billion range, according to Reuters' sources.

Little additional information was available as to whether Skype was actually considering offers from Google, Facebook or other companies.

Skype's web-based video calling, chat and VoIP services are currently in competition with various Google services. On the other hand, Facebook could work to deeply integrate the service with its massive social network, allowing users to make calls through the service directly from their accounts.

Versions of Skype are currently available on nearly every smartphone platform, televisions, laptops, desktops and tablets.