IMHO ads are far more intrusive than sharing your upstream bandwidth with others, they also waste your attention and incept ideas in your mind. This is why some people choose to opt-out and use ad-blockers, and that's ok.

But as long as we want to get free quality content, publishers have to see some profit (And I'm ok with that). You opt-in to many things when you visit a website on a regular basis, and tools like peer5 are just one of these things.

(Fixed typo)