Push loot messages into floating combat text. (And other places too. But it's the floating combat text by default.)
Scan for rare mobs so you can find them and their loot
An official source of knowledge for where things are in the Dragon Isles, in HandyNotes
The original source of knowledge for the War Within expansion, showing where everything is in Khaz Algar: treasures, rares, achievements, secrets
The original source for where things are in Pandaria