Ok, sorry, I misunderstood. I had lingering memories of the critiques against groupons earlier non-GAAP measures [1][2][3][4][5][6] but the non-GAAP net income mostly seems to exclude stock, acquistion costs are pretty low and very clearly separated from marketing and customer acquisitions. Again, my bad.

[1] http://online.wsj.com/article/SB1000142405311190363560457647...

[2] http://www3.cfo.com/article/2012/2/banking-capital-markets_g...

[3] http://blogs.smeal.psu.edu/grumpyoldaccountants/archives/530

[4] http://www.scalefinance.com/accounting-finance-and-groupons-...

[5] http://blog.agrawals.org/2011/09/24/groupons-cost-of-revenue...

[6] http://takingpitches.com/2011/06/04/groupon-s1-ipo-marketing...