Before you continue reading, couple of things to keep in mind: 1. my affiliation with LinkedIn, and 2. the fact that the numbers you see below are – US only. In March 2008, I blogged about LinkedIn’s stupendous growth rate (Nielsen Online) that saw us grow to over 7 million uniques in the US alone.

This past month, our continued growth took our audience numbers past double digit millions for the first time – currently at over 10 million uniques in the US. Equally interesting was engagement growth over 100% YOY. For the record, the audience numbers grew by roughly 154% in the same time period. It was also the 3rd fastest growing social networking site out in the Top 20.