[jarenmf]

I think it's a valid point for discussion but they deliver the ads through a different mechanism (system notifications). So it's a bit different than replacing the ads of other web pages.

[xNeil]

Not disputing your point at all - genuinely! But would you be fine if Google started serving you ads in your notifications?

I'm just rephrasing it, because for some reason it would be creepier for me if Google served ads in notifications - but that may just be me.