Product review (3 stars): Solves one problem, but creates another.
The Silent Feet Anti-Vibration Pads claim to "absorb vibrations caused by appliances and limit vibration transmission to the structure of your home." I agree with only the second part of that statement. Since there are literally thousands of different appliance and floor configurations, these feet probably work for some people more than for others. I will describe my specific installation. My comments should be considered valid only for similar installations.

I purchased these feet to install under my Maytag Neptune MAH8700 front loading washer. My floor is a raised wood floor, but with a firm framework of wood and steel underneath. Before installing these feet, my washer would spin most loads at full speed (1100 RPM), but the vibration noise would often carry to most areas of our one-story home. Recently, our washer had also starting "walking" ever so slightly (1" or less) with the occasional off-balance load. This may be due to aging rubber on the washer's feet. Maytag front loading washers have a pretty high-tech vibration reduction system built in, including spring mounted weights that vibrate in reverse to the washer's vibration, and a vibration detection system that stops the spin and attempts to readjust the load. It will also slow the maximum speed of a spin if it can't compensate any other way.

After installing the feet, the results were immediate and obvious:

1) The washing machine now had about 1/2" more "play room" on each of its four feet. When it went into spin cycle, it shook violently at low speeds. In most cases, the washer would stop, reverse, and tumble the load in an attempt to balance out what it thought was a grossly off-balance load. The washer had no idea that it was on a squishy surface now, and simply did what it was designed to do. It would often have to do this multiple times before it was balanced enough that it could get some sort of spin out of a load. This added about 15 minutes of time to per load.

2) When the washer finally started to spin a load, it never went at full speed anymore, again because it thought that the load was more imbalanced than it really was.

3) During the spin cycle, the machine itself vibrated much more than ever before. This can't be good for the washer.

4) The only positive observation was that, as Vibration Solutions claims, the feet "limit vibration transmission to the structure of your home." It is true that the noise of the spin cycle was greatly reduced in the rest of the house. This one little benefit is not enough to accept the problems, however.

Again, if your application is very different from mine, these feet may work well for you. Buying from Amazon is great because, if they do not work for your application, you can still return them. Best of luck!