We're beta testing Pixel Bender support in Picnik. If you're
playing around with the Pixel Bender Toolkit it's a snap to upload
your shader .pbj to picnik.com and mix it in with the rest of
Picnik's photo editing tools. We've also cooked up a couple
metadata tags to aid interactivity, like to have an effect's
position be controlled on-photo by the mouse and to provide shaders
with image dimension parameters.
We'd love to see what you create and will be bundling a few
of the finest shaders with full author credits for all Picniker's
to enjoy. If you'd like to give it a try, send me
(darrin[at]picnik.com) your Picnik user name and I'll add you to
the beta straight away!