Everyone sees a 404 page now and again, whether due to an incorrect URL, a site that hasn’t quite gotten all of its pages fleshed out, or a link is simply broken. But what a 404 page doesn’t usually do is provide anything useful to the frustrated user. The True Google 404 plugin aims to remedy that. It uses the trueGoogleSearch API to turn your usual useless 404 page into a handy list of urls that will help your user find what they are looking for.
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Easily customizable, this plugin can be tweaked to provide links from your site only or general suggestions based on limited keywords. These suggestions can keep users on your site longer and give them the chance to get useful information instead of ending up at a frustrating old 404 page not found message. You can even define your own template to match the look and feel of your site’s theme. Download True Google 404 from the WordPress repository.