i wonder if you could repeat with different languages and take some kind of semantic median? interesting problem.

[just to clarify, given the replies - i am talking about repeating in parallel, not in series. the idea being that errors might cancel out, rather than accumulate]

I think all conversations should be run back and forth through Google Translate until they reach equilibrium (a la Translation Party). For added awesomeness, do a multi-way equilibrium instead of just two languages.

Your post in Translation Party:

  I (translation of a la carte party) have achieved a balance
  between the universal and Google, and I need to translate
  the conversation. Not only, Blip.fm, from how to move from
  the language of two additional multi balance.

I think two languages is bad enough.

Tangential, but Translation Party doesn't work for me in the newest (stable) Firefox and Chrome.

The user would have to correct the resulting text anyways.