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Picasa is exceptionally straightforward to use, with a tabbed interface offering three options--My Photos, Favorites, and Explore--the last of which lets you browse the public photo library. Next to the tabs, you'll find a prominent Upload button for adding photos to your albums, which you can set to various levels of privacy. Within your albums, you have the option to view a slideshow, share via e-mail, make a collage or movie, order prints, and edit various aspects.
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