Deinitely Groupon. It is a POS company like FB. Less than 50% instit (smart money). 20% short (again, SMART money). 2 Billion shares outstanding!! No market security (especiallly when ads get worse! and other media get media attn). Def Groupon! It is the LOSER investment that FB aspires to be!
Probably Groupon. On the other hand, they can't even figure out how to integrate Instagram users into Facebook and instead are starting to wage war against Twitter. Well, guess what that will do to their real customer loyalty who often use both. If you had to chose Facebook over Twitter, which one would you chose... just ask any teenager.