TweetMute
Mute Twitter users easily without unfollowing them.
Instructions
Usage
Install the extension from here. To mute an user, add his or her name to the list. You can also block retweets, if you will.
Packaging
In case you want to package the extension by yourself. ##Targeted browsers
Currently, TweetMute is for Chrome only (5.0 and higher).
##Author
##License All code is published under GPLv3