The case is in the California Supreme Court:

Polevoy, a self-described “quackbuster” who runs a website dedicated to exposing fraudulent medicinal products, was a vocal critic of a now-defunct Toronto-based radio show about health issues hosted by broadcaster Christine McPhee.

Soon after the program was cancelled in 2000, Polevoy was targeted by a U.S. alternative health advocate, Tim Bolen, who made online accusations the doctor had not only forced McPhee off the air, but physically threatened and “stalked” her.

When Bolen’s comments were posted on Rosenthal’s website, Polevoy launched a libel suit that has woven its way through California courts ever since.