I am moderately involved in social media, and admittedly some of the uses of some sites is relatively subjective. But, I have never understood Linked In and the value it provides. (In short, it does not provide a value that I can see). I have a Linked In account, which I do not often use. I get nothing of even subjective value out of it. It is a site, which we might say in Texas, is all hat and no cattle.
Therefore, I appreciated this video on Current TV mocking Linked In. Enjoy.