Comment Re:Won't anyone think of the Users? (Score -1) 510
Breaking the back button can be done with HTML5+Javascript also. In fact I've seen it done many times (and yes I admit I may have done it myself). All you need to do is dump the contents of each sub-page into a DIV element via the innerHTML property, leaving the rest of the page (i.e. menus, footers, ad's etc) in tact.
I don't think the technology is to blame for miss-use by designers and developers. And I think that is what the real problem here is.
$20 says that you will be one of the first adopters of "HTML5block" when the technology is widely adopted for advertisements ;). At least with flashblock, it usually just blocks advertisements 95% of the time, and doesn't break page navigation. So without knowing it, perhaps you really actually like Flash as a technology?