Picnik

You may know Picnik, the photo and image edition service that has been created recently, now you'll be able to experience all its power right from Firefox. Picnik is the add-on for Firefox that offers you integration functions with the online service of the same name. This add-on will allow you to retouch, edit and save any picture you find when surfing the net, you will not need extra steps, just choose the photo, edit it and save it in your HD or into your Picnik account. If you are a Picnik user, this add-on is a ust have for you, and if you are not a Picnik user it may be a good reason to try it.