I'm aware of it...I think I came across it via a Google image search, when I found an image of a cat with absolutely striking eyes. Unfortunately, it was Photoshopped, but I visited the source page and it was one of those Warriors RP groups.
The RP and the novels are not for me, but I think it's kinda cool that they take ordinary cats and give them these elaborate backstories and storylines. I think it's safe to say that the authors and readers are cat people.