I don't know how they plan on making comments not anonymous. In this article the only defense is having users register. Which I'm assuming means that they would register with a valid email address and click a confirmation link. In that case services such as ShadyEmail.com and the like can get around this type of registration.

The only real way to stop anonymous comments and commenting is to make being a non-anonymous member of the community more rewarding and productive than being an anonymous member. It's not really a technology or policy issue, its an issue of personal incentive and community.