These tools will do everything from save just a section of a page to entire pages, as well as give you the ability to upload images automatically to specified image hosting services. In case you were wondering, I use FireShot for all of the images in the lists I create.
Abduction! - Directed more at showing people errors in webpages or helping with development, Abduction will save all or a portion of a page, or just a frame, as a GIF, JPG or PNG.
FireShot - An extremely handy screenshot extension that can shoot just the visible area of a page or capture the entire thing, no matter how long it is. Can be updated to a pro version that adds even more features such as an editor. Allows you to save to BMP, GIF, JPG or PNG.
Grab Them All - A bit different type of a screenshot program in that you enter multiple URLs, specify the type of image to shoot, and where it will be saved. When you activate the extension it goes through the list of URLs you specified and takes the shots atomatically for you. You can tell it to do either the viewable area or the entire entry page. A bit different, but a big time saver for large projects.
iimmgg.com Tools - Will allow you to take screenshots of the full page or just selected areas and upload them directly to iimmgg.com.
Kwout - Built with the idea of adding sections of a Web page to your blog entries as a form of quoting, but of course you can just save whatever sections you may need.
Screengrab - Screengrab only allows you to save your files as JPG or PNGs, but it does have a nice option in that not only can you choose the viewable area or full page for screenshots, but you can do just a section or frame if you choose. Can save you a lot of editing time by just not even bothering to save parts you won't ever need.
Screengrab with Upload - A variation of the Screengrab extension in that you can automatically upload your screen captures to an online server to share them immediately.
