GTFO
Reminds you when you are standing in stuff that can kill you.
Download for
-
Cataclysm -
Mists of Pandaria
-
Wrath of the Lich King
Cataclysm 
Mists of Pandaria 
Wrath of the Lich King Addon Details
Expansion
Cataclysm Categories
Developers
Having issues?
GTFO provides an audible alert when you’re standing in something you’re not supposed to be standing in. In some cases, you’ll be warned before you start taking damage. This mod improves your situational awareness and is recommended for dungeon divers and raiders of all skill levels as even the most seasoned veteran sometimes needs a reminder to GTFO.
Commands
/gtfo – Help menu
/gtfo options – Set configuration options
/gtfo standby – Suspend/Resume addon
/gtfo version – Show version numbers for your party/raid
/gtfo test – Simulate a high damage alert
/gtfo test2 – Simulate a low damage alert
/gtfo test3 – Simulate a fail alert
/gtfo test4 – Simulate a friendly fire alert
Download GTFO
More addons for Cataclysm
Discover other addons that might interest you
HandyNotes
Handy notes for your maps.
Collectinator
Scans your mini-pets and mounts and provide a check list for what you're missing.
BindPad
Keybinding UI for Items, Spells and Macros.
iShadow
iShadow adds shadowed border to the UI window.
NPCScan
Scans NPCs around you for rare ones.
WoWInstantMessenger
Give whispers an instant messenger feel.
SmartBuff
Cast the most important buffs on you or party or raid members.
Fizzle
Show item durability and quality in the character frame.