StackOverFlow 10 hour video anti bot system
Maybe I submitted without explaining...
https://news.ycombinator.com/item?id=12203503
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StackOverFlow has some cool routes for catching bot traffic and redirect it to random 10 hours video.
To experience it, open stackoverflow.com/index.php
More info can be found here: https://twitter.com/nick_craver/status/720062942960623616