We've read a lot about the power of updating old content (making it more relevant for today, finding other ways to add value to it) and republishing (Here I mean changing the publish date from the original publish date to today's date - not publishing on other sites).
I'm wondering if there is any danger of doing this at scale (designating a few months out of the year where we don't publish brand-new content but instead focus on taking our old blog posts, updating them, and changing the publish date - ~15 posts/month). We have a huge archive of old posts we believe we can add value to and publish anew to benefit our community/organic traffic visitors.
It seems like we could add a lot of value to readers by doing this, but I'm a little worried this might somehow be seen by Google as manipulative/spammy/something that could otherwise get us in trouble.
Does anyone have experience doing this or have thoughts on whether this might somehow be dangerous to do?
Thanks Moz community!