I am really surprised about the limited use of the MVP HOST file. I would have bet the farm this would have had greater use!
I for one am going to be given the MVPS HOSTS file a shot very soon...it looks like a great idea for dealing with scum-ware at its very essence before the junk can get on to a PC and cause havoc.
Why use a host file when you have ad block plus?
Because Ad-Block only protects via your browser whereas a Hosts file protects the whole system whether your browsing or not and is not browser specific.