The HTTP 502 Bad Gateway errors are unfortunally due to load over at Posterous. We do take those in consideration and back off exponentially until we hit 32 se

The HTTP 502 Bad Gateway errors are unfortunally due to load over at Posterous. We do take those in consideration and back off exponentially until we hit 32 seconds - but continue retrying for specific set of times. You're very welcome to join us on IRC. Thanks for being interested!