[setr]

>(But of course once you do, Google - and others - could parse your data and deprive you of site visitors because they can answer queries natively)

Isn't that basically the whole point? That information provided by sites can become independent from those sites? For scraping, re-rendering, modifying, etc

[pgeorgi]

Right, but I think it's worth adding the disclaimer because there are also folks who are shocked (SHOCKED!) that something like this could happen.

But you're right, that's the whole point of schema.org.