Seems like https://www.livecoding.tv is ad free. (I didn't see any after I turned off ABP but human error exists.)

Could try dual streaming on that site and Twitch for a period to especially since there is a IRC chat where people could hangout together.

I don't actually know how to dual-stream at the moment - I will have to look into that. But it does seem like a good idea if that site doesn't show ads!

- Casey