Where X == Distribution && Y == System/Hardware/Device

More and more frequently questions are appearing requesting feedback from users using such and such flavor of Ubuntu on such and such platform. Should these, "almost-discussion-like" questions be allowed? If so what guidelines should be followed so we don't have 5 topics regarding Dell XPS11, XPS12, XPS13, and XPS14? If not what course of action should be taken against such topics?