You get more flies with honey than you do with vinegar... however you get just as many with a big steamy pile of crap too (no I'm not being negative. On this thread either) one other problem is its all text and even best intentions can go awry (remember the road to hell is paved with good intentions) also people are just extremly stubborn and pig headed (I myself included) but generally it is better to be nice and don't automattically say its all so and so's fault or as the person above said be patient be nice and teach them or discuss it.