in case u haven't seen old news and one of many complaints about groupon's efforts to pressure IPO stock price artificially high by floating less than 5% of its shares. Have heard analysts on TV saying its time for the SEC to step in. They got the pop they wanted and if i understand correctly their purpose was to borrow money from banks based on the initial high share price. and as many predicted, after the initial pop, stock price would fall. seems this is the model for all the recent IPOs internet and ceasars.
Don't waste time with the research firms. Talk to the small business retailers who only use the service once. The real metric to focus on is repeat usage by retailers. Also talk with people who have worked there. Then watch the movie Boiler Room. That will tell you what its really like. Then get out of the stock.