Ten google chrome extensions which i'm using

Last week finally i executed magic command on my workstation:
sudo apt-get remove opera
and fully started to use Google Chrome on my linux machine as a primary web browser, as for work, so for personal needs. Here is the post about ten google chrome extensions which i'm using every day:
  1. AdBlock Premium - i think no need to explain what is this, block it, block it;
  2. Clear Cache Shortcut - Very simple and useful extension, clear browser cache in one click;
  3. CSSViewer - CSSViewer is a simple CSS property viewer for Google chrome originally made by Nicolas Huon as a FireFox addon;
  4. goo.gl URL Shortener extension - url shortener right in your browser;
  5. Hangout Chat Notifications - get notifiations from google hangout in your browser;
  6. Octotree - if you're using github, i really should try this browser extensions to display GitHub code in tree format;
  7. Speed Dial - fast access to favorite web resources, it was last thing that prompted me to move from opera to chrome;
  8. Twitter for Chrome - i think no need to explain what is this :);
  9. Web Developer - the Web Developer extension adds various web developer tools to a browser. Very good and useful extension, many tools in one place;
  10. Google Docs - Google docs in browser.
  11. Interesting in bash/grep/awk/sed/etc... programming? -
If you're know something another useful and interesting google chrome extension, please write me comment.