I love LinkedIn, as you may be aware, and am so fascinated by it that I am even thinking about starting a whole website for LinkedIn strategy, tips and tricks... well, perhaps after I get the new blog off the ground. Anyway, on your profile – in the bottom right-hand corner, you can see who else viewers of your profile viewed. I find this very interesting as after a while you begin to identify certain community pockets or collectives that are associated together. I've included mine below and it is certainly is a diverse bunch.
Just a little bit different from Barack Obama's one: ;-)