Pay-per-click advertising is not without its problems— especially "click fraud", the practice of generating bogus clicks for devious reasons, such as making a rival advertiser pay for nothing.

点击付费广告也不是没有它自己的问题，特别是“欺诈性点击”，一种为了不正当理由比如让竞争对手损失而诞生的伪点击行为。