Google's love affair with NFC continues to blossom, and QR codes are starting to feel like a neglected stepchild. After a successful trial run in Portland, the once-upon-a-search company is expanding its NFC check-in program to four new cities, slapping RFID "Recommended on Google" stickers on windows in Las Vegas; Madison, Wisconsin; Charlotte, North Carolina; and Austin, Texas. The company wants to be the best in the location-based service market, and NFC is its crane kick. While Foursquare and Facebook users are forced to do silly things like tra
