Two new lines in robots.txt were the first sign of a hack
Two lines appeared in a robots.txt file nobody on the team edits. They were the first trace of a hacked WordPress blog, and I let the alert sit for 26 hours.
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The robots.txt mistake that blocked Google in plain sight
A robots.txt mistake silently blocked an entire site from Google while testers reported it as allowed. Here is how the parser disagreement happened.
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Has the schema markup been broken for three months with no one noticing? A true story from an SEO veteran
Despite having over 16 years of SEO experience, it’s difficult to spot invisible errors. Here’s a story that was shared on LinkedIn by Nick LeRoy.
