Web Based Photo editor

The draw back to being away from my machine at home or work is having access to a good photo editor. I get frustrated with gimp and just want a simple and straight forward app that can crop and resize with specific controls.  I found this web based photo editor that has a lot of features and many of them are available for free, the better filters and fancy tools are premium features.  For a quick and dirty crop and resize its hard to beat.  http://www.picnik.com