So it appears that Google is building the PBN doomsday device that will wipe out PBNs..one of the last bastions of Black hat SEO is falling - or so they want you to believe. You see, it comes down to this - will Google ever penalise regular websites (intentionally) that are going about their business providing good information and are seemingly untouched by the grubby paws of blackhatters like you and I? I hope you answered no. The answer is then, don't build a private blog NETWORK. Instead build a series of satellite sites that operate on their own individually and bear no resemblance to the PBNs that we're all used to seeing, build REAL websites, with valuable information. Do all the wonderful things like different hosting, who is data etc that real sites do. Don't create a network that is interlinked, 1 PBN site to 1 money site, because how many real websites really have the same link profiles? Build sites that will survive a manual review. Build sites that will make Matt Cutt's mother want to take you out to a nice steak dinner and pick up the bill afterwards. For that extra level of paranoia, use Firefox, avoid Gmail, take holidays to foreign countries to post real comments on your blog - perhaps avoid using Google internet balloons to connect to the internet though. Just keep it real. Will most people do this? No. People can't afford 1 to 1 sites, they'll cut corners on content, they'll reuse themes, they'll sell blog posts. No more waking up in the morning and worrying if your business and sites have been flushed and are now floating somewhere far out at sea. You should love Google, they'll eventually eliminate 99% of your competition, other companies will go out of business leaving you to mop up the delicious remains.