It does not send data back to game or anywhere else.
“Monitor” and “WoW Addon” does not give you more power over NPCs or other players in game. We digitally sign our software and put our real names on it, so everyone could know, who to blame, if something will go wrong. This project is open source and anyone can check all code at any time. Therefore, we keep everything as transparent, as possible. Blizzard has no control outside the game over “Monitor” and, reasonably, can’t take responsibility for it, by allowing it on Curse. It is not on Curse because of “Monitor”, which is external program. Why it is not on Curse? (Security and Concerns)