Wikipedia always gives you a small X button to close the donation request. It doesn't show up again in the session (though I'm not very sure of this). Ads would

Wikipedia always gives you a small X button to close the donation request. It doesn't show up again in the session (though I'm not very sure of this). Ads wouldn't give you that option. If they did, suddenly everybody would want the ad-less wikipedia or would start using adblock, defeating the whole purpose. I would say it is reasonable enough to ask users to just click the X if it irritates them so much, for providing such a fantastic service for free.