I've disabled adsense because it brings in like $0.60/wk. When I first got approved, it was like $8.00/day, but that slowly died down. Not sure why exactly. Adsense revenue isn't worth slowing down a site and angering users.
I think it might be worth it if you had a few projects all running Adsense, like 10 sites, or something. Correct me if I'm wrong?
$400 / mo at 40-50,000 monthly UU. It's not a web app, just static website with lots of data.
$0. My side projects are for me first and I want to provide ad free experiences for those who happen to use them. Be the change you want to see.