Hi there, I was just wondering, I have a google sitemap but haven't updated it in a while - do I need to? If so would I just create a new one and just upload it again? Thanks for any help.
Update your sitemap when you have new pages / updated them. Or, just do it once a week, biweekly or once in a while - depending on how often and when you update your website.
As I make changes to my sites, I generate a new site map and submit it to Google. I recommend that it is done at least one a week for a heavyly changing site or biweekly for everyone else.
i think updating sitemaps is necessery only if you add static pages. In case of dynamic pages, it will crawl automatically. Correct me if I'm wrong.
I think updating the site map is worth doing on the dynamic sites because this gives indication for the crawler that a particular page has been updated.