This is an issue that doesn't seem to be getting much play in all of the discussion about Groupon's financials - for every $2 that comes in the door as revenue,

This is an issue that doesn't seem to be getting much play in all of the discussion about Groupon's financials - for every $2 that comes in the door as revenue, $1 of that immediately is booked as a liability as well. I am far from an accountant or all that familiar with GAAP but it seems somewhat disingenuous.