@TimWardCam ah, sorry! i must have completely misunderstood your comment :-(
well, afaiu ads in their present form pose a number of security issues in addition to the psychological, esthetical and ideological ones…
anyways, i am sorry, and thank you for the explanation!
@tivasyk From time to time I ask in various places "has anyone ever bought anything from an ad that was shoved in their face when they were trying to look at something else" and nobody has ever said "yes". So I do wonder at the effectiveness of this advertising.