Twitter handle is your identifier : Real Lawyers Have Blogs.
Kevin O'Keefe hits the nail on the head here. If you aren't engaged, as a lawyer, with Social Media; especially Twitter and Google+, you are like a lawyer in 1980 without a telephone number. I am @rickgeorges on Twitter and +Richard Georges on Google+. Just as a GMail address is essential (firstname.lastname@example.org), engagement in Social Media makes you a part of the global discussion. It is how you get noticed on the Internet; but, more than that, it is how you become part of the coming revolution in communications.