Vox boasts about the traffic it got from reposting old articles
Vox:
In a five-day period, we ran 88 of these stories, and collectively they brought in over 500,000 readers. That was great to see. The articles generated a lot of positive feedback, and some pieces that writers really put a lot of work into but that didn't attract much readership the first time around became hits.
What was interesting — though not completely unexpected — was that no one even seemed to notice that we were flooding the site with previously published content.
...
we're going to make the December experiment a routine part of the site.