Have some small sites that have generated a few hundred each month from ads that continue to do well. I don't have to do anything with them. But I have started to double-down on some of these successes by offering some paid SAAS options around them. After an initial push, I hope they will mainly be passive, as well. The free sites serve as the lead generation. So I am OK with them growing organically that way. It's slow, but easy. If one shows more promise or potential than others, perhaps I will put in more feature development or marketing efforts there.