This plugin puts a high demand on server resources. It also sets and updates a cookie on every page of your site. This prevents server-side caching/accelerators like Varnish from working. Since the top managed WordPress hosts use Varnish or similar server-side caching, use of this anti-spam method is not a small drawback.
Nice tool but it made my site unacceptably slow, so I had to uninstall it.
This is ugly output and doesn't do anything fantastic. Avoid.
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