HUFFINGTON POST - June 14 - One-year-old dating site Grouper connects people based on their Facebook profiles.The service requires the two people it connects to each bring along two friends on the date, creating 3-on-3 outings. Grouper partners with local hot spots and gets a discount on each party's first round of drinks in exchange for providing the venue with foot traffic. Grouper founder Michael Waxman declined to share revenue figures, but said that Grouper has organized "thousands of dates so far at over a hundred Manhattan venues" and is now "cash-flow positive."