I just today found out about WebMD's great new Healthy Cats page. The articles appear to be written by nonveterinarians, but reviewed by veterinarians, so hopefully there won't be any serious misinformation there. Be aware that opinions vary within the veterinary community on many subjects, so you may find some things that go counter to my recommendations on this and other websites. But this is certainly better information than what we used to see too much of on the internet in the way of random layperson's rants and ravings.
At any rate, I am majorly in favor of ANY website or source that promotes a better informed pet owning public.