I have a Flickr account. I have photos. I want to edit out a section of a photo on flickr. I want to cover up or blacken out a part of a photo. A simple paint brush to paint a colour over an area is all i need. However flickr's integrated photo editor, Picnic, doesn't support this. Is there any other online flickr photo editor? I don't want to have to download a photo and upload it to a new site (if I'm doing that, I can just use the gimp on my desktop).