I can see this working for a free hosting product, but for paid hosting (including hosting bundled with Web design), this would seriously piss off most people, IMO.
Still, if you found the right niche, and had a hook that would prevent your customers/users from getting mad, this could drive some traffic. The quality would be pretty crappy, though, because all of those people would be in a hurry to hop back to the site, and try to find the page they are looking for.
There is another way to make money on it, but this isn't the right place to talk about that.