Microsoft has agreed to sell on around 650 patents to Facebook in a deal worth $550 million. The Haüs of Zuckerberg will stump up the cash in exchange for various social networking patents that were registered by AOL (disclaimer: Engadget's parent company) and sold to Redmond for $1 billion a fortnight ago. Microsoft will hold onto the remaining 275 in its portfolio and cross-license those that it's sold on, but not the 300 pat
