PUBLICATION: Security and Privacy in Online Social Networks
© Springer. Personal use of this material is permitted. The definitive version of this paper was published in Book chapter in "Handbook of Social Network, Technologies and Applications", Part 4, Springer, October 2010, ISBN: 978-1-4419-7141-8 and is available at : http://dx.doi.org/10.1007/978-1-4419-7142-5_23
