Who are WebmedCentral?

"It is essential in biomedical publishing to be transparent and accountable. Indeed, this is something with which the publishers of WebmedCentral agree. However, on their website they only say that "We are a group of medical and management professionals with no affiliation to any major biomedical publishing group." As posted on their YouTube video by Larry Weisenthal, "Transparency begins at home. This is one of the most opaque, allegedly scientific web sites I've ever seen. Can you imagine submitting a serious scientific paper to a black hole, where it's impossible to learn the names of the publisher, editors, contributing editors, etc.?" We know what WebmedCentral is, but who are they? ..."