My recent article about the true size of social media platforms has prompted a lot of people to examine how many real people are followers or friends, and there has been some interesting additional data made available.

Social media agency Umpf released the results of a survey of about 2,400 UK consumers with active profiles in the form of an infographic: (via Vikki Chowney at Econsultancy.)

The infographic is not perfect, the choice of shapes and colors can make similar sized percentages look very different in size so please take a look at the numbers.

Youtube does pretty well, it's not often included in discussions about social media. Should other platforms be considered too? Say, Amazon where lots of people write reviews and engage with one another?