Unless there's a method where I can directly pay them with cash or BitCoins. I'm blocking their ads and consuming their service for free. For reasons already mentioned by others.
I'll use Nexus mods as an example (http://www.nexusmods.com/games/). When accessing their site (which I do regularly), their web service tells you that they need ads to survive and offer you a life time ad-free subscription for 2.50GBP. Of course, it only shows when it can detect you're using Ad Blocker Plus. But this is the subscription model that more clients need to use.
YouTube Red (not RedTube... made the mistake of recommending this to a client yesterday) is another similar method. Though everyone knows Google is trolling my browsing habits anyway.
