The chart shows a huge disparity between Facebook and the other social networking sites in terms of unique visits. Facebook is the only obvious site that is experiencing an upward trending growth while others clustered at the bottom of the chart. LinkedIn and Twitter also appear to be growing at a steady pace but definitely in a different league from Facebook.
Regardless, both Twitter and LinkedIn serve different needs and aren’t much of a threat to Facebook (yet). Looking at this direction, the chart has taught us a simple business lesson: “To win, we have to differentiate from our competitors”. LinkedIn (professional networking) and Twitter (mirco-blogging) are two successful product differentiation examples.