Although mostly harmless and amusing (e.g. the pink ipad one, the "Add to cart" one) so long as you dare not to click them, it has been noticed that some advertisements have been greatly obscene and/or offensive. Unfortunately at this point in time there is nothing that can be done about them. Try your best to ignore them and if you are not aware of what I am speaking, congratulations. You may post your reflections in this topic.