I'd be all for browsers blocking the ability of web sites to intercept or repurpose ctrl-W, personally. But I think repurposing ctrl-S is often a good idea.
One might have thought the OP highlighted the inherent problems in making assumptions about the meaning of meta-keys for all of your users, all around the world.
But of course the OP continued to make the same mistake, which I pointed out way up at the beginning of this branch.
