Early to mid 2000s, my website was blowing up and so came advertisers, and Google Adsense. I think, having a Google Pagerank of 7-8 helped a lot. Besides the typical, one of the best month I remember was when a company bought a bunch of Adobe’ Creative Suite licenses after clicking my affiliate link. Btw, I did away with any form of ads by around 2017/2018. I never wanted my website to be commercially earning money but in those days, the money on the side helped me bootstrap my Startups and pay my rent.
Dug up some pictures for you
Earlier pampering by Macromedia https://www.flickr.com/photos/brajeshwar/albums/720575940835...
And some of these other pictures should give you a rough idea that my site was good enough to earn not-so-bad money early on. Also look at the sidebar in the website, that is how we added the ads - just plain text with hyperlinks.
https://www.dropbox.com/s/0pat7u9csqj8n15/brajeshwar.com-200...
https://www.dropbox.com/s/u0vdmv81gq8v3bi/google-adsense-che...
https://www.dropbox.com/s/qdml3x3q68nq5ru/brajeshwar.com-inc...
https://www.dropbox.com/s/7cshznldpaphivq/brajeshwar.com-ado...
https://www.dropbox.com/s/5yxcy4iun17ipng/brajeshwar.com-com...