Product review (4 stars): Wonderful concept executed fairly well
Works great - with a few exceptions. Don't get me wrong, we totally enjoy our wonderwash. It's a really fun way to do small loads of laundry -- of course, we're in our early/mid-20's, so perhaps not everyone will agree. My review is based upon the wonderwash' usage as a SOLE washing machine for typical laundry. This means that for several months, we only used the wonderwash for every item that would fit, and did not have another washing machine. I don't think the product design holds up to that standard.. if it were just for camping/treks, it would have 5 stars.

Pros
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~The hand-crank is very easy to use -- despite the actual weight when the washer's full, spinning & tumbling is exceptionally easy, so major points for thoughtful engineering there.

~It's much more efficient than a traditional washing machine. Don't even worry about your water bill.. because you're barely using anything! If you're an apartment dweller like me, though.. you have had to deal with coin-operated washers and watch your money disappear. Not with the Wonder Wash. Yes, it's money up-front, but our family recouped that money within months and has saved hundreds on laundry.

~Clothes seem to genuinely get cleaner than with a traditional machine. This is entirely subjective, and only an observation on my end - our denims, washed with the wonderwash instead of through our coin-op laundry, seemed to be genuinely cleaner. The fabric was more pliable, pants were more comfortable, and everything put through seemed to be CLEANER.

CONS
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~Load size is very small. I would purchase a redesigned product again, if it were 3x as large. That would, of course, necessitate a swap to a heavier frame, EG Stainless Steel.. but would be worth it. With an overall time of 30 minutes per load, I can't recommend this for anyone with a kid that hasn't learned how to pee in a toilet vs. whatever she happens to be wearing. Luckily, we're past that stage now.. but the wonderwash got beaten to bits from extremely heavy use (Another PRO, it held up GREAT!)

~The "watertight" seal on the lid proved to be.. not watertight. It held up for the very first load, but all subsequent loads.. it simply leaked. Now, from what my knowledge is, that lack of water-tight seal meant a loss of pressure, which meant less efficient washing. That's true, but ours worked pretty well for what we expected out of it. If I were to purchase this product again, it would have to have a redesigned seal system that holds up past the first use.

~ The frame is not built heavily enough. It's a lightweight plastic frame that you assemble using plugs, which are prone to fall out during usage. We lost a few of those plugs just from standard usage. Because of the frame's weight disadvantage, when it's fully loaded, it does seem to "sway" side to side and be affected by the rotation of the bin. If I was going to purchase it again, I would need to have something like a lightweight steel or more overbuilt plastic frame.