I had a great one like this with LinkedIn recently - a client called me to discuss something and mentioned a third-party; I hadn't heard of them so asked if the

I had a great one like this with LinkedIn recently - a client called me to discuss something and mentioned a third-party; I hadn't heard of them so asked if the client could send me some information; he sent me an email later that day with a link to the other company's web site, which I duly clicked and browsed around. The very next day, in my LinkedIn "People you may know" in the top row was a lead developer at that very same (tiny, otherwise totally unconnected to me) company.