YouTube Comment Snob filters out undesirable comments from YouTube comment threads. You can choose to have any of the following rules mark a comment for removal:  
* More than # spelling mistakes: The number of mistakes is customizable, and the extension uses Firefox's built-in spell checker.  
* All capital letters  
* No capital letters  
* Doesn't start with a capital letter  
* Excessive punctuation (!!!! ????)  
* Excessive capitalization