The only way to know what this add-on does is to download it.
You can look at the Change Log for cryptic hints though.
1. This add-on will not attempt to harm you in any way.
2. This add-on will not do anything during combat.
3. This add-on will not interact with other players on your behalf.
4. This add-on will not affect your gameplay.
Have you seen my other add-ons yet? SanityCheck - Of course you know how to play your class, but there is just so much to remember! Raidbot - The right way to raid! Flaskaholic - Flasks are expensive, stop wasting them! MooTrack - The simple, lightweight way to keep track of buffs and debuffs! MagicMarker - One configurable tool for all your automatic marking needs!
* The Whisperer has been unleashed upon our world.