Some great posts on NFC, mobile payments and local

There were some really good posts on NFC, mobile payments and local that I ran across this week.

These are must-reads for many of the folks who follow me on Twitter:

And in case you missed the news: I’m getting out of the writing about Groupon business. It’s been more than a year and it’s time to move on to other things. A note to my friends in the media: I’m still happy to help you with your Groupon stories, I just won’t be writing my own. Let me know if you need analysis or introductions to sources.