If you don't mind sharing, how much do you get through those affiliate programs compared to advertising?

Also, would you consider providing some kind of paid model in addition to ads? I use DDG dozens of times per day as my primary search engine; I would happily pay for it. I realize that model doesn't scale to the entire world, as only a fraction of people will pay, but do you have some way for people who like what you're doing to pay you a modest amount, with as little friction as Patreon and similar?