Seeing as the URL for the redirected page has "suspended" in it, well it's obvious what has happened. As to exactly why though, considering Bluehost claim their hosting package provides "unlimited" data transfer, it would be feasible to assume the account's been suspended because of either unpaid bills or some sort of copyright infringement.
As for an alternative, the only other one I've found similar to it is
http://valkae.blogspot.com, but it's in its infancy still and doesn't have too many tv shows/movies available. They accept uploads though like GVA. The only annoyance about Valkae I find is they cap the upload size to 1mb and require you to convert the image to reduce the filesize. Doing this invariably reduces the quality if you go about it the quick and easy way (by using MS Paint) so for movie artwork at least the quality is going to be less than that of GetVideoArtwork.