Product review (5 stars): Makes Water Taste Better.
This fits into the on-board water system in my fridge.  I have serious doubts about water filters in general.  I am not convinced that they actually improve the safety of the city water, and I seriously doubt that they remove any chlorine or fluoride.  On the other hand, that water doesn't taste very good right out of the faucet, but it tastes great once it goes through this filter.  Five stars for taste!