Ever been annoyed by that one person whispering you with tons of spelling mistakes and question marks while everyone else seems to be able to whisper you in perfect English just fine?
Ever had your serious and properly spelled discussion in General chat interrupted by some guy that never learned how to make a proper sentence?

With this addon installed, these situations won't occur again!

Take a look at the screenshots for two quick examples:

1 - A whisper like this won't stand out anymore if you install this addon. In fact, you won't even notice the difference between 100% perfectly spelled whispers and this one anymore.

2 - A line like this is seriously misplaced if you're trying to have a serious conversation on that channel. However, with this addon installed it will be seamlessly integrated into the rest of your chat!

Here is a full list of chat offenses that this addon will try to mask:
-Ronmdaly tpniyg lrtetes in teh worng odrer.
-Using too many exlamation marks and question marks!!!!1
-2 many abbreviations 4 words u could ezly type out instead, srsly.
-Using smileys and words such as "lol" as punctuation.... rofl.
-TYPING WHOLE SENTENCES IN CAPS WHERE IT DOESNT MAKE ANY SENSE

With this addon installed, you won't ever know if anyone did anything mentioned in the above list.
I know it's hard to believe, but the addon does exactly what the description says!

Of course, addons can't change the way people type, so the effect is purely client side.