Definitely :D I started reposting 3 months ago, my oldest content and people loved it, in fact! And I've encouraged others to try that as well, there are always posts that I miss even from Steemians who I follow regularly :) I haven't reposted anything lately as I've been doing Inktober and I try not to spam. Upgrading and updating an old post makes it fair and more interesting. I've also cut down unnecessary parts making posts easier to read.
I keep all of my posts' links and image previews in a word document, so it's really easy to find good old stuff ^^