I have a website that need be very up-to-date, I mean, pages can be published just for 30 days, after that it should be unpublished. Everyday more than 300 pages is "removed", For theses pages I am returning http code "410" (Gone), also I remove from the sitemap. Now, I am checking Google WebMasterTools and I am getting thousands of pages not found.
So... My questions
- Does it have SEO impact?
- How is the best approach to treat it?
