Search Engines & SEO Blog
Noodp not through x-robots-headerJohannes Beus
Usually, this subject would not be worth its own blogpost but it ended up being too long for the few characters allotted by Twitter. A while ago, the large searchengines (reads: „Google“) have opened the possibility of sending crawler-commands not only through a meta-tag but also through the HTTP-header. I wrote something on this matter here. In principle, this works wonderfully well and I like this feature and use it often.Though today, I noticed that the implementation seems not to be done too well: while commands like “noarchive” are implemented without a problem, Google is ignoring a “noodp”, which is supposed to make sure, that the snippet is generated from the sites' content and not from its Dmoz-text. We can also see this nicely for this blog, where first, we have the HTTP-header with the x-robots-instruction:  and then we have the actual snippet, that is shown for this blog in the Google-SERPs, which includes the Dmoz-text:  Mistake or deliberation? I, for one, cannot come up with a plausible reason for the second possibility.
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