I beg to differ. Every month or so HN always has some blog post hit front page about how Facebook is broken and needs to be fixed, pointing out all of its issue

I beg to differ. Every month or so HN always has some blog post hit front page about how Facebook is broken and needs to be fixed, pointing out all of its issues (subjectively) and offering no alternatives or solutions. I've had the exact opposite experience with Facebook even with ads. As I google search on my computer, Facebook's ads actually become relevant. As I scan my front page, I see news from friends that I find interesting and status posts about friends that I care about. If I see something irrelevant or spam-ish, there's a convenient tab next to the post that gives me the option to never see it again. Sure, there's some self-management involved in getting Facebook to work for you but it's audience is so broad it kind of has to be that way right?