I just found out about this and have been using the heck out of it all day! Ahutter is THE BEST screenshot tool for Linux that I have ever seen."Shutter is a feature-rich screenshot program. You can take a screenshot of a specific area, window, your whole screen, or even of a website - apply different effects to it, draw on it to highlight points, and then upload to an image hosting site, all within one window. Shutter is free, open-source, and licensed under GPL v3."
By far the easiest to use, most intuitive, and feature loaded screenshot tool for Linux that I have come across. Adding effects is easy, and highly useful for designers!
Here is a guide for adding the Shutter repo to Ubuntu:
http://shutter-project.org/faq-help/ppa-installation-guide/
Ubuntu Karmic Koala (9.10) is the first version of Ubuntu that includes official Shutter packages (universe – community maintained section).
You can install it by using the package manager or the following command:
sudo apt-get install shutter
For other distributions, you can find info further down this page
http://shutter-project.org/downloads/
For screenshots go here:
http://shutter-project.org/screenshots/
For screencast go here:
http://shutter-project.org/screencast/
