We've been using Google Plus all week and we can already foresee wasting a huge portion of our lives on it until we're forcibly herded into the next social networking breakthrough. The one stumble we had was dividing our friends up into Google Plus's suggested "circles" of family, friends, and coworkers. We believe life isn't lived by drawing such lines in the sand, so we came up with our own set of 21 suggested circles for dividing up your friends on Google Plus. We'll continue adding to this list, so tell us in the comments which ones we missed.