I left out these very last sentences, Writeacher. Tahnk you very much.
1) Interactive advertising is an advertising technique which tries to make (better: create) contact with its clients.
2) In Sweden there is a law according to which (not for which) children cannot appear in any ads.
3) Today advertisers want to reach our hearts and minds with advertisements like washing powders that don’t just clean clothes, but that make them pure, or with cars that give you a real buzz. 4) They seem to imply that when you buy that or those products you won’t even have to introduce yourself because the brand itself does it.
They look fine overall.
In #2, I'd say, "... a law that children..."
In #4, I'd say, "when you buy those products..."