I was on the forums and I saw this advert: Is I live in Britain, I didn't really want to see this. Thanks!
They are and aren't, most of the time it shows relevant ads based on search history, but there will always be random ones.
Nothing we can do about them, as lucky said they are either random or based on search history. But I doubt AdSense would show anything inappropriate or something actually scary.
I kept seeing ads for a game that said "Once you get start playing your friends won't see you." with a scantly clad woman >.> All I go on is memebase ;3;
They are. However they're set for what site you're on also. If you're on a gaming site you'll generally see ads for games and vice versa.
xD chrome is a lovely browser that has a wonderful extension called ad blocker which stops ads from appearing so you are free to browse in peace