Outsourcing with the web and mechanical turks

The web still has more to give for outsourcing work.  This article is about Amazon's Mechanical Turk that allows tasks that only humans can do to be subbed out or crowdsourced.  This is not available in the UK as far as I can find but seems to be good for transcriptions and surveys.  With a bit more development on building reputation of the workers (and higher pay for higher rated workers) perhaps this could be good for translations, proofing, spreadsheet fixing and  many other things.  Definitely an idea to watch.