You don't need to use google ads. Theymos doesn't seem keen on adding additional revenue sources anyway, but you could just add more banners here if you wanted more income from adverts. As I suggested before, having one at the top of sub boards would be lucrative and companies can target what areas they want to advertise in ie a gambling company would advertise in a gambling board.
Yes, that's pretty viable. Another way is to also feature sponsored/ prioritized posts or stickies to boost their presence.
By the way, theymos solely determines the advertisers (from the bidding), right?
I'm not sure what that means.
I think what he meant that it's style of censorship; mods deleting at their discretion.