You won’t find it hard to believe that I am an extrovert (ESTJ for all you Myers-Briggs people out there).  Over the last several years I have tried to build a vast array of personal and professional contact, not because I am just an obsessive-compulsive networker (which I am), but because I sincerely enjoy getting to know librarians, vendors, service providers, and various hangers-on of the library world. Knowing others well has always served me better than being well known. But how much is enough?  I find myself needing a social networking strategy.  What seems to have started as an …