We're delighted to announce that Lyle Roberts, who publishes the excellent 10b-5 Daily weblog on securities law, class actions and related topics, will be joining us this week with guest posts. He's an attorney at Wilson Sonsini based in Reston, Va. where his "practice consists of defending public corporations in class actions, derivative actions, merger and acquisition litigation, and SEC enforcement actions. I also counsel clients with respect to securities regulatory issues, including listing and delisting on the Nasdaq Stock Market."