No, never.  We have a running mantra around here.  Social networking should never be a leg holding up your table.  It can be a nice looking and essential decanter on your table, but never, ever make it a leg in your table.
Don’t get me wrong, you can make a fortune on social networking like Facebook, Twitter, Linked In, YouTube, etc.  But that fortune can disappear overnight, when they make the decision to change things.