Kiss-and-tell is as old as love itself. Fortunately, most indiscreet paramours limit their blabbing to a few confidants. Not Jessica Cutler. In May 2004, she spilled out the graphic details of her sexual exploits on Capitol Hill on a blog accessible to hundreds of millions of Internet users. Now a federal lawsuit by one of her past lovers has set up a potentially high-stakes battle between privacy and speech rights and could give new meaning to the idea of safe sex in a wired world. Cutler's blog, written under the pseudonym Washingtonienne, was a daily diary of her sex life...