In a recent survey of 19 social networks by Pingdom they have found that there is a shift in the average age of social network users. For example: The average social network user is 37. The average LinkedIn user is 44. The average Twitter user is 39. The average Facebook user is 38. The average MySpace user is 31 and The average Bebo user is 28. Still Facebook facts show that users ages 50-65 are the fastest growing user group.