First of all, sorry if this is a repost, i searched and did not find any thread about this one.
Rogue is an in-game internet explorer. It can be used in many games that rogue supports, wow in that case. It is not actually an addon( you dont put it in the addons folder) it is a program that runs in the background.
Pros:
Wow runs faster if you browse internet in game than alt+tabbing or having wow in windowed mode.
Rogue actually offers anything you would like your browser to have
You can control it is transparecy, show on/off (without having to start rogue again) and you can change cursor respond to game/browser with only a hot key. So you can have a web page showing, in low transparecy and still play wow, moving cursor over the explorer will not make the cursor click on the internet page but on the game!
You can download it from rogue.gotgame.com/download