A friend of mine has reported a massive up-tick on public (and some private) PBN links in his network over the past two weeks roughly. I'm guessing somewhere around 30% and 50% de-indexation on him. After checking the (very large) pool of PBNs I track I also noticed a increase in those de-indexed, though nowhere near the ~50% of my colleague. Have any of you also noticed a trend of deindexing of PBNs during this recent "mystery" G update? Are PBNs finally under attack or is this a coincidence?