Google Ignores Automated Social Profiles. Facebook Clickbait Forces Spam Update Immunity for PBNs.
Consecutive algorithm updates wiped out over 50% of some operators' link-selling site networks between June and September, observes Frank.
Spam Updates
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Spam Algorithms Track Two-Way Redirects to Expose Cloaking Operations
Two-way redirects operate as a technical footprint for cloaking detection during algorithmic spam updates, notes Ivana Flynn.