QUOTE(AndyJ @ Apr 20 2012, 16:30)

So my boyfriend uses my laptop occasionally, which is fine.
Recently though I've been researching stuff for his birthday and now all the ad's that appear on websites are of what I wanted to get him which is going to kind of ruin the surprise..
I've gone to Google Ads Preference Manager and opted out, I've deleted history, cache, cookies, the lot, but they are still appearing. I've even turned it off and on again.
Any help would be amazing.
There is a facility called AdBlocker but not sure how effective it is...try Googling for it