Children dont convert ads to sales, they get their mommies to do that for them.

I'm not married nor do I have kids, but I have definitely seen the effects of a child desiring something. Often that desire comes from the influence of an advertisement.

I dont think online ads have traditionally targeted young kids much because there is not really a reliable means to focus in on them. The demographic can be very specific (as far as age range). Pikluk could be an new way to target a specific age bracket on the internet, which would be very desirable to advertisers.

I hear you about the legal issue of blocking ads and replacing them with your own though. People might have serious problems with that..