Great project. I don't see privacy being mentioned in your message nor on the website, that + the comment about the extension's permissions are a big no for me.
It's 2019, I would expect such info to be given when reaching to the HN audience. We know you need to make money, the website doesn't say how, the logical assumption is that we're giving data to pay you and personally I like to know how much I have to pay before trying a new service.