Heads up people, this is where Google starts to become the destination and not just the search engine.
It's already happening in Google Maps where reviews of local businesses are displayed without ever taking the end user to the review site, no revenue for them.
Everyone doing travel sites has just had their walking papers handed to them.
Allowing Google to index your site is good.
Allowing Google to mashup your content and control the visitor is bad.
Eventually, they'll run most of us out of business and whoever is left will be hanging by a thread with no traffic.