When I recommend Linux for my friends, the top two "programs" they care about are Skype and Facebook. After that, maybe Youtube.
As for the ads, yes, that's a source of revenue. If that is a dealbreaker for author, well, I had that opinion once myself. Then I graduated high school and worked for a very interesting advertising startup, learned about the origins and practice of it and how it grew up alongside print, took advantage of and sped up the development of new technologies, etc. I don't expect to convince anyone but advertising is itself a worthwhile problem.