See the seeking alpha report out today http://seekingalpha.com/article/1414481-linkedin-after-the-earnings-the-end-of-amazing-growth-rates
And you believe SA?
There is nothing new in that article. The company is firing on all cylinders. Law of large numbers that growth rate comes down, but new businesses are going to keep the absolute growth rate high. Will be over $200 at some point this summer.
It looks accurate to me. Though other factors can trump fundamentals. Seems this will eventually come back from fantasy land valuations.