When Skype 5.0 landed, bringing a pretty comprehensive Facebook tie-in with it, we dubbed it one of the "biggest web communication partnerships of all time".
And whilst it's all well and good that you can see what your Facebook buddies are up to via your Skype client, and post status updates, it doesn't seem to be a two-way partnership.
But all that could be set to change, with Skype-powered video calling possibly coming to the social network.
A developer messing around with a blog's Facebook application has noticed a previously unseen object in the app-code, called VideoChat.
This object has a number of Skype properties associated to it, and there is also plugin support for ActiveX on IE using the Skype SDK.
Now, it doesn't take a genius to work out what all this could mean.
With Zuckerberg and the gang keen to bring all communication methods under its own, rapidly expanding, umbrella, (see the non-email, email killing feature recently announced) it makes perfect sense that Facebook would want in on the video calling action.
The original source notes that the VideoChat object isn't always present, so it could mean that Facebook is testing the code.
If we hear anything official, then we'll be sure to let you know.