1mm Euros raised so far... 50 billion or so more to go. It's an interesting idea, but that's a lot of dough to raise. Also, giving Greece a handout like this would not do anything for the underlying problems that lead to this point.
On a side note, it would be interesting to see if there were any logistical problems with transferring this sort of wealth through indiegogo. At that scale, a transfer of money would affect the values of other world currencies - triggering a lot of trading activity as a result. Large investors who have already transferred their wealth to other currencies would be very quick to re-balance their holdings in order to avoid being affected by the transfer.