Sites like Outbrain and Taboola are great for promoting your website or blog as long as you have some sales funnel setup and an ability to track those individuals who arrive from these platforms. These sites will promote your content across thousands of other similar websites across the internet for a fee. However, be sure to do your due diligence and test things out before diving in headfirst.
Historical refreshes of content is a good thing, especially if some of your content has expired. Note, this does not mean re-doing your content; simply refreshing it to bring it current if it isn't already evergreen content. Look at ways you can update outdated content on your site to drive more traffic through visibility on search engines like Google.