In Europe, I tip very rarely and only if the service was truly above and beyond. But yeah I saw it on a couple machines now and it sucks, let's hope we don't import this silly trend from America.
It's lame how you're supposed to click no tip with the cashier standing right there staring at you. I've done that a few times when these first started popping up all over, but I always kind of felt like an asshole afterwards. Now I've just accepted the fact that I have all these new tips I have to pay.