Chetan Sharma’s blog Always On Real-Time Access is this week’s host for the Carnival of the Mobilists. This week’s edition features posts looking at mobile and social networking, mobile application development, 5 reasons why mobile VoIP has (so far?) failed, another iteration looking into the shortfalls of mobile advertising to date, a presentation on concepts and technologies behind real-time demand data, and last but not least – for all of us who weren’t there – a CTIA round-up. Lots of goodies, so go read it here.