Any question answered...

Not sure if this is working with me yet but I removed my Google history.
Go to your account settings, down the bottom you have "web history", it asks you to type your password in again, then you click on "remove web history", it also pauses the collecting too.

If they have no data collected they cannot tailor the adverts, which is actually quite annoying. If I go and buy a power tool, for the next week it will show me adverts of power tools, when I've just bought what I need...

thanks. yeah done that, and done the 'opt out' on both gmail and something else it gave options for, but haven't installed the plug-in.