I've had quite a lot of good furniture from there, which has lasted more than a decade. I think they carry crap and they carry things which are well made and well designed.
There does recently seem to be more crap, though. I tried to buy a floor lamp from there a couple of months ago, and they seemed to be basically not charging enough to be able to make their designs to a decent standard. If you're going to make a floor lamp for £30-40, just make it simple, don't put in a lot of hinges which aren't properly secured or balanced, or snake-like fittings which make loud groaning noises every time they are moved. Ironically I got something less ambitious and better designed from the local anonymous hardware store. Disappointing to see a company like IKEA which is supposed to be all about thought-out industrial design making mistakes like that.