I don't care much personally.
Like it's really cool that some members went out of their way to do it for us (we honestly never bought a single ad space on 4chan) but, well…
Officially I'd rather spend the site's money towards server costs, we're not exactly rich (The Minecraft server is not funded by member's donations to the site, but by my own money as well as the server's admin's)
Personally, I find internet ads intrusive and I don't think they're viable mostly because more and more people use adblock. I think aeventually the focus is gonna switch to other ways to advertise and monetize on the internet, that won't be copying from other media.
Twitter seems to be on the right path for example. But that's a completely different debate, anyway, that's how I feel about ads on /mlp/.