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The purpose is to showcase art, photography or photos of family to share with others.
Shortlist,
Evolutiion - responsive, simple, up to date, packaged with other well done themes - http://elegantthemes.com/preview/Evolution/
BigBang - meets all criteria and the other ones done by this company look very good - http://demo.brankic.net/?theme=BigBangWP
Theme Stores
http://themeforest.net/ - Very large collection, well organized.
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