73% of European Internet users use social network sites. In total this is about 347 million people. Facebook is the most popular site with 62% users. 16% of European Internet users use Twitter. The Eastern-European Vkontakte is in third place with a 12% adoption. LinkedIn is 4th with 11% penetration amongst European Internet users. Within Europe it is mainly Eastern and Southern Europe who obtain good scores with a higher adoption than the European average. Western Europe’s score is lower at 66% adoption. These are some remarkable conclusions from an InSites Consulting survey amongst more than 9,000 consumers in 35 countries.