Here's a tale of two radically different uses of technology on Capitol Hill: the first to keep all but the most-connected people out, and the second to let the rest of us in. In the first case, we have Members of Congress who are crack-berry addicts staying in permanent contact with their cronies and donors, even on the floor where lobbyists are supposedly banned. And in the second case, we have a Republican Congressman who is Twittering from what he calls the "deepest and darkest hole" in Congress.