What it is:  Pinterest is a new obsession of mine.  I signed up for the invite-only version a while ago but hadn’t done anything with the service since.  In between Reform Symposium sessions I wandered back on to check it out.  Wow. I know there are other tools out there that do what Pinterest do but none that are so immediately user friendly and visually appealing.  I am impressed and addicted.  Pinterest lets you “pin” things from around the web on virtual pin boards.  You can create as many boards as you want and share them with others.  Each time you…