Some types of visual advertising, not based around electronic media, for e.g. flyers or ads in newspapers are OK as they are able to be self regulated if you are looking at protecting your kids from their influence. Plus it is a good way for a consumer to choose what they do or don't want to look at depending upon their interests.
However by far the biggest problem is controlling unwanted images that are provided through electronic media, ranging from games, devices, PC, etc.
Sure filtering and blocks will take you so far, but there is still tons of crap advertisement, spam, and scammers that finds their way through. That is a war in itself to keep them at bay.
Plus there is the most insidious, invasive issue that we now have with electronic based advertising images every where you look, on the sides of buildings/buses/cabs/hoardings/windows as you walk through the streets of the city.
It is a huge marketing war going on out there in the streets, with advertisers fighting over every spare visible surface in which to lay their multi-million dollar message. Short of banning your kids from going into the big city or walking the streets with a blind fold on, it is not easy to avoid those messages.
The marketeers are continually on the lookout for new ways to invade your private space, and it would not surprise me if 'pop-ups' suddenly appear on the inside of my sunglasses one of these days.
