OK, so the bigwigs at AT&T and Verizon have learned to make nice (for the time being at least), but what's a hapless iPhone user to do about dropped calls and other network problems? The AT&T Mark The Spot app offers long-suffering (or even the intermittently bedeviled) customers the ability to ping their carrier in real time, with location-specific feedback, should one experience a coverage crisis. To begin registering your gripes, hit the source link and download away! [Warning: iTunes source link]AT&T's n