With Facebook releasing the Groups feature, it seems that Mark Zuckerberg is trying to make the website exclusive again.  When the company was exclusive to the world its members seemed to be much more satisfied.  But what is it about Facebook that makes the service no longer exclusive?  Why has it lost the cool factor?  Remember when no one knew what Facebook was?  Yea, me either.  But there was a day when Facebook was a place where you and only your friends could go.  This was the time when you …