I’ve been building online businesses and e-commerce websites since 2000. I would never in my life start a new website with a “free” blogging or “free” website platform. If you do, within months your website is going to start growing, and you’re going to have to switch to a paid platform anyway. You will have thrown away all that time (and lost money in the process).
Selling private ads can come in the form of banners, buttons, or links. You can even make money writing sponsored posts where you write about or give a review of an advertiser’s product or service. Another option is to write an underwritten post or series, which is where you can write about any topic, but the advertiser pays for a “Brought to you by” mention in the content.