I don't have a LinkedIn profile. The only obvious difference that's made to my life is that I never get emails from my "CEO" asking me to drop what I'm doing a

I don't have a LinkedIn profile. The only obvious difference that's made to my life is that I never get emails from my "CEO" asking me to drop what I'm doing and buy him some iTunes gift cards. Which is something my LinkedIn-using colleagues get fairly regularly. LinkedIn is a huge centralised database of phishing targets. Whatever upside it might provide to the world, that's a pretty big downside.