Liable? For what? You're literally doing nothing damaging or illegal.
Also advertisers hate fake clicks on ads (they call it ad fraud) but they will blame the site owner so that's not really a problem.
The question was if it's illegal, not if it drives advertisers mad. The whole point is to drive them mad. :)
Also advertisers hate fake clicks on ads (they call it ad fraud) but they will blame the site owner so that's not really a problem.