I've come across this site before but never really checked it out. It's incredibly useful, especially when drilling for B2B and social media.
Further reasons *not* to have a website. Increasingly I'm thinking that websites just don't cut it. Why would you want to put something static, boring and non-shareable out there? Make a fluid, compelling, interlinked system of social sites and you win on every score: more communities, more advocates, more traffic. What's to lose?