Yes I just installed the add-ons for FF and IE, I don't use the HOSTS file at all, for me it is just too much hassle to constantly add moving targets, when Firefox, NoScript and Adblock Plus does the job without any need to modify the HOSTS file.
It is so easy with HostsMan and its browser speedup proxy HostsServer.
"Everything should be made as simple as possible, but not simpler."
Albert Einstein
Anyone can make things more complex than need be.