Good Points

1. Clear: Show the numbers in text clearly
2. Provides information: The graph tries to compare different types of users by presenting the figures in varied sizes of rings.

Bad Points

1. Not factual: The sizes of the ring grows linearly instead of following the real growth rate.
2. Boring: More description can be included, the image can also be made responsive to attract readers' interest.

For viewing the improved version of the graph, please click here.