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Hi,

Our site has over 48,000 indexed links, with a good mix of pages, posts and dynamic pages.

For the purposes of SEO and the recent talk of "fresh content" - would it be better to keep dynamic pages as they are or manually create static pages/ subpages.

The one noticable downside with dynamic pages is that they arent picked up by any sitemap plugins, you need to manually create a separate sitemap just for these dynamic links.

Any thoughts??

Yeah, same here. It is done on a recurring weekly basis on the same day of the week you had initially setup the campaign.