MultiThreading

[macintosh264]

Added multithreading to the table so you don't hang up the main thread with network requests.

[zadr]

performSelector:withObject:afterDelay: is non-blocking and will defer to the runloop. I suspect (but haven't bothered benchmarking) that spawning a new thread, and then dispatching back to the main runloop is actually more expensive than letting the runloop handle things outright.

[macintosh264]

It is useful when executing network requests, and thus is better than letting it run on the main runloop.

[monzonj]

Actually, the refresh method should be replaced by a delegate that performs whatever request is needed to update this table view. This controller is generic and should be oblivious about implementations details