If you're actually asking:
"Groupon is no Google today, but they do have a visionary founder, an incredible brand, insane revenue growth, and address a real problem for merchants and consumers."
or see my comments here:
http://news.ycombinator.com/item?id=2618080
and here:
Based on nostalgic feelings about the 2000s?
Warren Buffet and his daughter wrote a whole book on how to go over a company's P&L statements line-by-line and determine whether or not it's a value. Groupon fails that test. That quote is about buying companies that are doing better than the market thinks they are -- and his methodology is a way to find and prove those cases on paper. Not with hunches.
Can you back this sentiment up with anything more than vague comparisons to Google?