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Seems to pull together the reviews from a great number of the lens review sites like DP Review and Frd Miranda.
Worth a look if you are looking at lenses. Only lists Canons but has links to reviews of other manufacturers but not by individual lens.
http://www.eflens.com/
Looks a good site.
As an extra, there also this site that i've used for a while which also reviews third party lenses in addition to Nikon etc.
http://www.photozone.de/canon-eos
This Nikon lence simulator might intrest some -
http://imaging.nikon.com/products/imaging/lineup/lens/simulator/
You can simulate how different lenses ranging from wide to telescopic and different formats can interact to create different photographs.