I tried running ads once, made about a penny in a month. Turned off the ads, cleaned up the site, focused on posting my notes/work, and ended up getting recruit

I tried running ads once, made about a penny in a month. Turned off the ads, cleaned up the site, focused on posting my notes/work, and ended up getting recruited through some engineers finding my posts when searching for info. To me, that was way more worth it than any ad revenue, but of course, your mileage may vary.