Two Twitter users are suing Twitter over the process of stopping messages that come to the mobile device. There is a point. If you said no further communication, it should end. However, this second message is useful since it is possible you may have sent the stop message by accident, say, a premature send when you really meant to tweet something like, “Stop the press, the client has arrived!” Most text services and even email newsletters are double opt-in and double opt-out. Is it really necessary to sue someone for taking the precautions to make sure you meant to take that action? If tweets or email newsletters were to continue after the second response of “Yes, I really don’t want your content anymore,” then its a problem. Bringing a law suit against Twitter seems like more than consumer concern.