Not that Microsoft has any major track-records in the NFC-field, it has recently registered a NFC trademark design which is registered for goods and services for "computers and computer peripherals featuring near field communication (NFC) connectivity; computer software for providing near field communication (NFC)". As a matter of fact this could be used for anything, from Windows (8) to Windows Phone (8) to accessories like mice or keyboards. For sure, the trademark isn't unveiling the purpose of this registration but if we keep in mind that Windows Phone is confirmed to support NFC and Google's Wallet payment service is NFC-based, I would guess that Microsoft will use this for Windows Phone as well, not just for its upcoming new desktop Windows.
However, it's also imaginable that Microsoft will introduce a similar "touch and share" service between its desktop OS devices, based on Windows 8, and its mobile OS devices, based on Windows Phone, as HP introduced with the launch of the HP TouchPad and the Pre 3 (RIP). Only time will tell but the image above indicates a kind of near field sharing, Microsoft might has in the pipeline.
Cheers ~ Arne