The implied ending to that sentence is "...on Google." "Maybe you shouldn't do it [...on Google]. Or, [...on the internet]. Or [...in a way that people can fin

The implied ending to that sentence is "...on Google." "Maybe you shouldn't do it [...on Google]. Or, [...on the internet]. Or [...in a way that people can find out]. The idea is that privacy is difficult on the Internet: your ISP knows what you're doing, your search engine knows what you're doing, etc. So doing something online without telling someone about it is really really hard. So if you don't want someone to know about it, basically your only choice is to not do it [online]. It's not that creepy and it's not the typical privacy fallacy everyone thinks it is (the "if you're not doing anything wrong then you have nothing to hide" bullshit)