Somewhat like the author does, I use my iPhone for this.  It's actually surprised me how often this comes in handy.  Unlike the author, while I wouldn't mind more screen space and easier typing, for the "with kids" situations I'm in I generally need a hand free.  So a larger device is right out.<p>I suppose if I spent more time just hanging out at home that'd be more useful, but I'm usually <i>doing</i> something either at home or out (with the kids).