[romaniv]

>Today this would be even harder, with the prevalence of web pages that are actually _heavily_ dynamic apps. Navigation to a new "page" is a much fuzzier concept now. What gets indexed?

This kind of stuff is why I am an advocate of progressive enhancement. It's not about whether someone has JS disabled or not. It's about using HTML as a semantic representation of information rather than a mere rendering layer. The second option might seem more convenient at times, but the first one opens a lot more doors for innovation in the long run.