Product review (5 stars): Better tasting water on the cheap!
We just moved into a new home and are now on well water. The water is hard with a strong iron taste. Not wanting to spend much, I figured I'd give one of these a try. It fits perfectly in our fridge (Kenmore model 795.79302.900). I was pleasantly surprised to find an improvement in taste. (I blind tested it and the water run through the filter tasted noticeably better.) I would be surprised if it does much for the safety of water, but I can confidently say it improved taste.

Pros:
Low Price
Improves Taste
Easy install

Cons:
Needs to be replaced every 6 months (not too bad, I'd say!)