Shortcode Redirect allows site owners to automatically redirect a user after a chosen amount of seconds when viewing a page or post on the site. The plugin instructions are very simple. Add a shortcode to the post/page that looks like the following [redirect url='http://somesite.com' sec='3'] the url= part is where you define the URL to redirect the user to and the sec= part is where you define how many seconds to wait before redirecting.
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Shortcode redirect should work with older versions of WordPress as well but was not tested with anything older than 2.7