My nephew sends me an invite to join his LinkedIn network. My nephew! He who knows every phone number and email I own!!
Just busting his chops, but seriously I get so many invites from LinkedIn and when I do accept them (every few weeks I feel guilty and sign in), 98% of them have NOTHING to tell me. It's just another notch on their belt. I have 4 contacts who have 500+ connections each!
I try to emulate Peggy Taylor - I try hard to respond to every email and phone and Skype and TypePad message I get. If you need to reach me, my contact info is in the profile. Open door.
I know lots of people love LinkedIn, but if you need to reach me, please just reach out to me directly ...cheers
Update: I just got a LinkedIn invite from good friend Chris Selland - it says "You had BETTER accept this!"