Most adult blogs are associated with a porn producer or porn star or make significant funds through advertisements with porn. I’ve dabbled in it and, so far, the payoff hasn’t been worth it.
There are soooo many great sex blogs out there. Plus, a lot of people aren’t really aware of sex blogs (https://theporndude.com/popular-porn-blog) and what the best ones do, which is provide the kind of sex education most people need but can’t often find. Sex bloggers write honest sex toy reviews, provide information about, well, everything, and blog about their own sex lives in a way that makes their writing approachable, sex-positive and fun to read.
If you are talking about non-commercial or commercial sites. The commercial sites tend to get the high hit numbers but they are really only selling porn. If you are looking for something more thought provoking an honest then you want to look at the non-commercial sex blogs of which there are tons of them to choose from and it is about finding a writing style that suits you.