Oh my, yes, and entire verticals exist to close the loop on what you did when the app couldn't connect in the background for whatever reason (e.g. combining wif

Oh my, yes, and entire verticals exist to close the loop on what you did when the app couldn't connect in the background for whatever reason (e.g. combining wifi points, other sensor data, and retransmitting when back online and comparing to credit card activity or customer data from participating businesses). This article is a bit anti-facebook/what-if 101, but may give you some things to look into if you're interested: http://www.salimvirani.com/facebook/ http://www.salimvirani.com/facebook/