@article{335297,
      author = {Penenberg, Adam L.},
      url = {http://library.usi.edu/record/335297},
      title = {Viral loop : from Facebook to Twitter, how today's  smartest businesses grow themselves /},
      publisher = {Hyperion,},
      abstract = {From Google to Facebook, the author delves into how a  "viral loop," a situation where using a product means  needing to share it with others, can make an online  business a success.},
      recid = {335297},
      pages = {ix, 274 p. :},
      address = {New York :},
      year = {2009},
}