Out of all the zero-sum tech arms races (increasingly complex DRM, SPAM senders/blockers, software crackers vs. copy protection, code obfuscation) this one seems to me to be the stupidest. Here we have people putting data out in public for free, for anyone to access, and then agonizing over how someone accesses it. If some data is your company's secret sauce, your competitive advantage, don't put it out on the Internet. If your data is not your competitive advantage, then why bother wasting all this development effort stopping browsers from browsing it? So much waste on both sides.