What is the average age of Facebook users?

6 years old

You mean there is an equal amount of under 6 year olds using computers as much as anyone older than 6 years?!? No.

The average age of a computer user depends on where you are. In the U.K and America, it's somewhere between 18 and 24 years old. Further east, the average age gets higher. I don't think there is a way of measuring it accurately but I would guess at around 22 years old.