Social and business networking sites are changing the way people talk online. Sites like Facebook, MySpace and Bebo help friends stay in touch while LinkedIn and Plaxo mainly connect business users. They are very popular but present new challenges to IT managers. They seem to have come out of nowhere. For example, Facebook currently has 70m users, 40% of which are located in the US. The rapid growth of such sites is part of the problem. Companies risk being caught off guard. Learn how to protect your business from threats posed by online social networking in this 7 Step Guide for IT Managers.