I confess I was sceptical about LinkedIn. It had a whiff of 'networking' which - at conferences when I was a grad student - I never had the stomach for. I know it's what 'getting on' requires and that it doesn't have to be as phoney as it feels to me to be, but I knew I was only going to be able to engage with this 'thing' in minimal way. I signed up and created a basic profile. I wanted to try to import my work contacts but I could find the right file on my computer to use on the 'Import Contacts' page. When I signed in a second time I was informed that I had turned up in searches 16 times since I last logged in. That disturbed me slightly. Unless I update this post, I think I'm going to move on.