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