Talon is a Firefox add-on that enhances the way you can grab images from your web browser. The neatest aspect of this is the ability to create an image that contains the entire web page you are viewing. The benefits of this for presentations and training guides are plentiful.
Talon was created to work with online image editor Aviary, which is also well worth exploring!
Want to grab that web page screenshot without installing Talon? Simply add Aviary.com/ to the beginning of the URL you wish to copy. Example: Aviary.com/http://saveohiolibraries.com/
found via TechCrunch, nearly a month ago