Personally I'd either pay for a service or let it be ad supported and I prefer seeing high relevance ads only, which would require data like my IP, age, browsin

Personally I'd either pay for a service or let it be ad supported and I prefer seeing high relevance ads only, which would require data like my IP, age, browsing habits etc to be factored in. So I prefer Google ads that are based on my searches to Twitter ads that always seem to sell some contraption with dubious utility. But ads can get ultra intrusive if you carry around tracking thingies like cookies and people have varying thresholds for what they consider "personal" information.