Q: I can't register since I never received the activation email.
A: Check to make sure that it didn't get blocked by a spam filter. In addition to any filters within your email program, also check your ISP's spam filter. To do this, you'll need to log in to your email account from your ISP's web page. Once there, be sure to add the thisisms.com domain to any custom whitelist to make certain that you'll receive future emails from ThisIsMS.