Ok, a few things:
1) A "vore site" is a website that caters to the vore fetish. While there's many different forms of this, the oversimplified way to explain it is that it's a fetish around the idea of either being eaten by, or eating, another being. Pure fantasy. Becomes much, much worse if carried out in real life.
2) The site in question that Warren has worked with, caters specifically to macrophilia, the fetish of interacting with giant and/or tiny people. It just so happens that macrophilia and vore can often overlap, but this site in question also deals with cuckolding/humiliation, feet, body worship, transformation, and occasional voyeurism.
3) The "vore" that Warren did is either POV, or using gummi bears/candy. I know this because, I refer to my earlier comment, I was surprised that he turned up on a website that I look at every two months or so.
Also, since we're talking about it, Warren has also worked with another site which fixates on muscle worship and medical examinations, but under an actual fake name.