The pie charts depict five different social media platforms, which people like to use in three years, between 2011 and 2013. Overall, Facebook made a majority, while Pinterest was the minority in total proportion.
To commence with, Facebook handle the hightest users in 2011，which began at 59%. Although it decreased rapidly to just below two fifths, it was still the most popular channel. Compare to the secound in the diagrams, the users of Facebook were 3 times as much as the users of Twitter in the first year. However, there was a slight growth in the platform of Twitter, amounting to a quarter of the overall channel in the final year.
Looking at the other websites, Pinterest had the lowest users, representing a small proportion in those years. Moreover, the percentage of people using Linkedln was 2 times as much as the people who using Google+ in 2011. Yet, the Google+ users increase considerably, which has a similar proportion with Linkedln.