I only visit 20-30 sites over a week that I feel obliged to unblock as I visit them weekly and they don't offer a subscription for an ad free experience. If it helps them in anyway, I'm all for it. 3 of the admins I have managed to email questions to have also declined me sending them money or buying them a beer/coffee via paypal
I'd love if every small website had a tip jar, buy them a coffee every week/fortnight/month