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Updated August 2026: Invalid rel values on category/tag links were an HTML5 validation issue in older themes/plugins. If you still see “Bad value … for attribute rel”, inspect the theme or a SEO plugin’s breadcrumb/link...
WordPress wrong comment IP Having trouble with WordPress wrong comment IP behind a Loadbalancing environment or especially Varnish / HAProxy? Getting local IP address in comment posts e.g.? Solutions is here! If you have...
WordPress ping list tested a nice feature of WordPress is to spread your new blog entries to all the important blog search engines of the world. therefor I have searched around and tested those links...