Ask HN: Idea of building a Pay per Click system1 points·by kingdm·14 anni fa·2 commentsOut of curiousity, how does this pay-per-click works? Any idea on how they built that kind of system?1 commentsPost comment[–]mooism2·14 anni fareplyWhich pay per click system? Who is "they"?[–]kingdm·14 anni fareplyGoogle Adwords perhaps?