Really this product is beyond useless. Sometimes IKEA gets it right, but all too often they fail and this is one of those times. It's a fail of design over function, and in the word of dish drainers function is pretty much the critical factor.
This product fails for the following reasons: The V angle created is more than 90 degrees. Most mugs have a 90 degree angle at which they naturally rest, so when placed in this rack they rest on only one edge, not two making them unstable. So unstable in fact that they will happily roll along the central V and right off the end and smash seamlessly on the floor.
The bottom tier is to small for many mugs and far too small for any plates. Plus it's really hard to wiggle things in and out when there is effectively a 'roof' above.
The fact that it's two tier means then even when empty it makes the kitchen look cluttered.
The V design means that there is large amount of space under the V which is inaccessible. This actually reduces the amount of capacity below that of just having your bare draining board.
It's made of poor grade chrome plated steel which rusts easily.
It folds away. When do you ever want to fold away a device you use three times a day? And where are you going to put it when it's folded?
The top V is formed by inter weaving metal wires - like locking your fingers together - the result is that small plates fall straight through the slots on one side of the rack while large plates (that need to rest in the slots on either sides) can't do well because the slots are offset from each other.