Disable Comments By Referer
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Ban visitors from certain sites from viewing or adding comments.
This plugin allows you to selectively disable comments for visitors from certain sites (e.g. reddit). If a visitor’s HTTP referer matches one of the hosts you’ve blacklisted, your post will look as if comments have been disabled (neither existing comments nor the new comment form will be shown).
Te puedes descargar este plugin para utilizarlo en tu sitio de .