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Have a watch of the recent Whiteboard Friday from Marie Haynes - she tells you about many different tactics that can work. https://moz.com/blog/what-links-comply-googles-guidelines-whiteboard-friday I tend to advise others to steer clear of anything that goes against Google's TOS. If they catch up with it, you will get a nasty penalty. -Andy

** redirected with a 301 in order to do not lost keyword rankings?** If you redirect, you are probably going to lose most of those rankings and traffic because those pages do not exist on your site anymore and it was the pages that qualified you to appear in the SERPs for those keywords and the content that earned your rankings. If those keywords and their traffic are still important for you, then create a new page with a new article that suits you, optimized for those important keywords and redirect there.  A better way would be to simply post new content on the currently existing page.   Those are the best ways to hold traffic when you don't want to continue with certain content. We have often changed our mind about content and done complete rewrites in the original URL.  Works great.