How you used to get people looking at your website before "going viral" was a thing, in the Web 1.0 days when people surfed the information superhighway by clicking on links to go from site to site.
1. The "Links" page! Every site had a page that was just links to other websites that the site owner thought were cool. You could email other site owners whose sites you thought were cool and ask if they thought your site was cool too, and they'd link back to you.