What I've been doing for many years is disabling all scripting and plugins globally and only allow what is needed on a per-site basis. You only have to allow it once, after all. That's in Opera, in FF I use NoScript so that is taken care of there. IE is neutered and not used for anything.
For example, this link posted in the Home Improvement forums shows a totally blank page in Opera with scripting disabled.
The difference between web pages and apps is pretty much non-existent these days. --
My 9/11 Tribute..online since 9/14/01
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