My 50 Tool Sites Make $0 in Ad Revenue

I added Google AdSense to all 50 tool sites, and I make $0 per month. The traffic is too low (10-50 visits/day per site), and AdSense requires 10k visits/month to make any real money.

I removed the ads, and now I use the sites to promote my Gumroad products (tool templates, app source code). I make $200/month from product sales, which is 100% more than ads.

If you have low-traffic sites, skip ads. Use them to promote your own products instead.