On the 15th of January Brave started a new program that shows ads on Brave publisher websites to those who have opted into see adds in the Brave Browser.

Publisher have to opt-in to this. You can do so by logging into your publisher account. Scroll to the bottom where you will find a toggle to turn it on/off next to your site(s).

More information here: https://basicattentiontoken.org/brave-previews-opt-in-ads-in-desktop-browser-developer-channel/

I have been running it for a few days and appear to be netting about 5 BAT, or about $1 per day, which takes my total BAT haul to around $50 per month.

With this I would estimate that Brave browser visitors are currently worth 25% of non-Brave browsers. This includes both those who have are not opted-in to see Brave ads and those who use ad blockers. This should grow further when rolled out to mobile.

This is quite a good showing since the rewards program has only really been working for about 3 months.