CNBC: Google’s “mobilegeddon” update last month, which was designed to favor mobile-friendly sites in search results, had no impact on HubPages. But a secretive algorithm tweak soon after was disastrous. HubPages, a collection of more than 870,000 miniblogs, saw its Google search traffic plunge 22 percent on May 3 from the prior week. Google refuses to provide any details. “It was just a giant whack across the board.”