Flickr gets Picnik photo editing power
We first heard that Flickr was partnering with Picnik back in October. At the time, we half suspected that all you'd see is an "edit with Picnik" button on each photo that would let you load up an image on Picnik's site. But the service that launched today is far cooler than that. You can access Picnik's powerful photo imaging interface without leaving Flickr at all.
That means you can crop, resize, adjust exposure, contract, color saturation and other aspects of your images with just a few clicks. You can also apply effects like converting color images to black and white. if you have a Picnik Premium account, you can access some additional effects like Infrared, Night Vision, Tint, and Invert.
In order to edit a photo, you'll need to login to your account and select an image you've uploaded. You'll should see an "edit photo" button in the toolbar above your picture. For now it doesn't look like there's any way to edit images uploaded by other users.