Really?<p>I mean, linkedin has a legit monetisation strategy just as a socially connected CV platform for recruiters to find people - and charging recruiters for tools to use it effectively.<p>That seems far far stronger than what I know of twitter.  Facebook - well what I really want to know is more detailed metrics like median time spent on it per user, interactions per user, etc etc.  I&#x27;d be fascinated to know if the trends are downwards.