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Full user review
"Great software and It's Free!"
It's Free, Great organizing features, Geo tagging, Fast
None I can think of
This is a great alternative to Adobe Lightroom or even Aperture on the Mac. If you only need to do light modifications to your photo's the learning curve is very minimal. The user interface seems really fast and snappy. Slideshow, Emailing, Blog, Geotagging are all built in to the interface. Also did I mention its FREE ! Great Job Google!