REELSEO - Jan 27 – According to a report by OpenDNS, businesses are blocking access to many social networking sites on company networks. The top three blocked sites are Facebook (14.2%), MySpace (9.9%) and YouTube (8.1%).Twitter ranks at number 5, with 2.3% of businesses blocking it. Conversely, YouTube and Facebook are also the most commonly whitelisted sites on business networks. FULL ARTICLE @ REELSEO