The Google Nexus S has a near field communications (NFC) chip in it, so you know that Google is interested in pursuing this technology for a variety of purposes. The use of this application is mobile payments and it looks like the search engine has just made its next big move on this front, buddying up with MasterCard and Citigroup to make it happen.
The interesting thing is that Google isn’t at all interested in taking a cut from the transaction...