Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: how sturdy is this?? I would use this on a carpeted floor.. does this tend to wabble??
Document: I am very happy with its appearance. The shelves are easily adjustable, and it looks like furniture. Assembly was quick (and I'm a 64-yo couch potato) and although I don't think it'll survive a big earthquake, it's quite sturdy for everyday use.Overall, I got every bit what I was hoping for.
This is nice look I my and the perfect size for the small area next to my media center.I was able to put it together myself. There are no pilot holes so I drilled my own. Heavier items go on the bottom shelf to add stability as its base is a tad narrower than I would like. Use a large Phillips screwdriver.
I have an older house the bows toward its center (not a good home for floor lamps) and I thought we would need to attach this to the wall to keep it upright. No need, the extra depth on the footing gives it added stability. It holds everything well, went together easily and look great on the wall.
This unit gave me everything I had been looking for in CD storage.This includes accommodating a husband who has saved every CD he bought in the last 30 years :( It is sturdy, attractive and functional. There is only one down side--&#34;some assembly required&#34; is understated. The instructions are clear if you know how to put things together, understand the downside of a cam, know how to use a drill gun and drive a nail.
I've had this shelf for over a month and it is nice, for the price. I would have given five stars rather than four though if Prepac, the manufacturer, had included all of the parts in the box. It was missing one of the two back pieces. When they sent a replacement, they also chose the slowest possible shipping method. The shelf itself is nice, but the company's packing/customer service departments could use some improvement.
I would recommend this shelf for that price to anyone looking for a nice looking sturdy shelf.
Easy enough to assemble, though not as no-brainer as some DYI items. The backing uses tape (on the back) to hold the pieces together and it doesn't have the predrilled nail holes that I've seen before. But once it's together and all the particle board dust is cleaned up, it's a sturdy shelf that holds everything I needed it to. Thought I would fill it up with CDs, but had one row extra, so used two slots for the kids DVDs.
I recommend it anyone who has a wood floor etc and no thick rugs and will store unit against a wall. Lots of storage space in this unit.
The assembly is not for a novice but the CD storage is great for the price. I would buy this again.
The trickiest part is lining up the back panels just right so that you have room to nail them on without missing a board. I managed ok with this but it is a bit annoying. Other than that you have 3 dowels 3 cam locks and 6 screws to hold it all together and it is sturdy.
Answer: Because it is tall and shallow it must - repeat must - be anchored to the wall.  Not a design flaw, just a matter of gravity.