How about F/OSS communities, programming blogs, and forums like HN stop allowing Google, Fb et al to index and link to their pages? Soon Google and co will find

How about F/OSS communities, programming blogs, and forums like HN stop allowing Google, Fb et al to index and link to their pages? Soon Google and co will find out there's not much content of value left in their garden. I for one can get along well with a couple sites such as github, stackoverflow, arstechnica, some EU quality journalism sites, etc. Most other stuff turns out to be self-promotion or ad-ladden feedbuzz for the digital precariat anyway (the kind of which you see on the subway and who can't stop fumbling with their smartphone for a even a second).