Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Clever design, but slips up

Am I the only person who's had the problem of the iPad slipping off the stand? The so-called non-slip stand in fact every so often sends your iPad slipping and sliding, even onto the floor. So in spite of the clever design in other respects, I find that I'm wary of using the stand. Some non-slip material on the base would probably do the trick, but hey, isn't that what I bought the stand for in the first place? A good idea badly executed.