Sounds like you're just looking for the latest, greatest thing. Trouble is, most other people like you - those looking for the latest, greatest thing - have already bid up the price of Groupon, mostly based on speculation.
Personally, when I want to buy individual stocks, I look for strong local companies which are closely followed by my local media. Since I live in the Upper Midwest, I own stock in 3M, Target, Hormel, and General Mills.
The stock market is going to take a turn one day, there may be a short window of opportunity left so if I do get back in it may be only for a short time and that time needs to count.
Down here where I live in GA the local big name stocks are UPS, Coke, AFLAC, Rubbermaid, Home Depot but don't want to do the buy and hold.
The banks haven't paid any interest to speak of in years, the only way to make money outside of the stock market these days is through Reward Points on credit cards.