Google ads

[Durbs]

Be very carful on Facebook adverts.

There are lots (and I mean lots), of groups on Facebook dedicated to getting adverts off Facebook, loads of people on there just click on every advert they see in order to waste advertisors money and put them off advertising.
A company I know wen from 30 - 800 visitors a month from people doing just that. Cost them about 50 quid in clicks.

Ta. I was not aware of that.

Luckily mine are per-impressions rather than per-click. I nearly went for per-click and glad i didn't now.