- Complete multi-target threat meter (which makes difference between mobs sharing the same name).

- Independant threat computation. You have a fairly good idea of what one's threat is even if one hasn't DTM installed on one's client.

- Designed for English and French languages - German is on its way.

- Configuration is well explained and easily accessable, through Blizzard's interface and bindings menus.

- Can provide compatible threat data to Omen2 and any AddOn using ThreatLib2.

- Can provide compatible threat data to KTM.

DiamondThreatMeter could only be designed thanks to features Blizzard added to inspection and combat log systems (2.3 and 2.4 patches).

DTM is also now hosted on WoWInterface. Go there for an alternate download link: http://www.wowinterface.com/downloads/info9512-DiamondThreatMeter.html

Highlights:

Threat displayed above nameplates if asked (though ineffective when more than 1 mob with a given name is engaged in combat).
An annoying bug for healers has been finally fixed !
Units are now flaggable as tank in the threat list by right clicking on their bar. This option will be further expended in following releases.
A "Reset everything" button has been introduced in case of having errors while patching DTM to a newer version.
1.5.0

Threat can now be displayed on nameplates. Check out the new options! There are unfortunately some restrictions on this new system. :/
This option can be turned on in a new config panel: "Nameplate".
New API: DTM_FindGUIDFromName(name).
Various files in docs folder have been updated.
The bars of threat list are now right-clickable to make an option dropdown apparear.
Currently, this option dropdown allows you to specify whether the unit the bar belongs to is a tank or not.
This will cause a tank icon to be displayed in front of the unit. This feature will evolve in a further version. For the moment, DTM will not remember between game sessions who is and who isn't a tank. It will come in a next version.

A "Reset everything" button has been added, it's now the last resort button in case DTM suffers from errors, especially when changing versions.
Fixed a bug causing healers not to apparear on threat lists when healing someone engaged against a mob if this healer did not do anything harmful toward any mob engaged in combat (Finally, I got it ! :)).
Fixed a bug causing header columns labels to show up despite being disabled in the skin editor.
Fixed incorrect positionning of the ring button occuring when using an UI scale different from 1.
Table of Contents
1 Installation Guide
2 Translations
3 TOC Numbers (Out of Date Mods)
4 Mac Support
5 Directory Structure
Installation Guide
Exit "World of Warcraft" completely
Download the mod you want to install
Make a folder on your desktop called "My Mods"
Save the .zip/.rar files to this folder.
If, when you try to download the file, it automatically "opens" it... you need to RIGHT click on the link and "save as..." or "Save Target As".
Extract the file - commonly known as 'unzipping'
Do this ONE FILE AT A TIME!
Windows
Windows XP a built in ZIP extractor. Double click on the file to open it, inside should be the file or folders needed. Copy these outside to the "My Mods" folder.
WinRAR: Right click the file, select "Extract Here"
WinZip: You MUST make sure the option to "Use Folder Names" is CHECKED or it will just extract the files and not make the proper folders how the Authors designed
Mac Users
StuffitExpander: Double click the archive to extract it to a folder in the current directory.
Verify your WoW Installation Path
That is where you are running WoW from and THAT is where you need to install your mods.
Move to the Addon folder
Open your World of Warcraft folder. (default is C:\Program Files\World of Warcraft\)
Go into the "Interface" folder.
Go into the "AddOns" folder.
In a new window, open the "My Mods" folder.
The "My Mods" folder should have the "Addonname" folder in it.
Move the "Addonname" folder into the "AddOns" folder
Start World of Warcraft
Make sure AddOns are installed
Log in
At the Character Select screen, look in lower left corner for the "addons" button.
If button is there: make sure all the mods you installed are listed and make sure "load out of date addons" is checked.
If the button is NOT there: means you did not install the addons properly. Look at the above screenshots. Try repeating the steps or getting someone who knows more about computers than you do to help.
Translations
When you download a mod, please be sure that the mod is compatible with your translation of wow. Some mods only work on the US versions, while some only work on some of the various European versions. These variations are called "Localizations".

TOC Numbers (Out of Date Mods)
When Blizzard patches WoW, they change the Interface number. This means that all mods will be "out of date" unless or until the author releases a new version for that interface. Some people go into the .toc files and update the numbers themselves, but this is STRONGLY advised against as it will cause problems locating possible incompatibilities addons. When you log into WoW after a patch, you DO NOT have to delete your interface directory. All you have to do is simply tell WoW to ignore the interface numbers and load all the mods anyway. All you have to do is, while at the "character select" screen, look in the lower left corner and click on the "addons" button. A window will pop up listing all your installed mods.

If you look in the upper left corner of that window there should be a box that says "Load Out of Date AddOns". You want to CHECK this box. Now simply go into WoW normally and all your mods should load. As of the 1.9 patch, you will have to do this after EVERY patch/update that Blizzard posts! If you encounter any problems with a mod after a patch, please be sure to let the author of the mod know so they can fix it.

See also: About "Out Of Date AddOns"

Mac Support
WoW addons are not platformed based. As such, they can be used on either Mac or PC. You can extract both .zip and .rar files on a Mac using StuffitExpander.

Directory Structure
World of Warcraft
|_ Interface
|_AddOns
|_*AddonName*
|_ *AddonName*.toc
|_ *AddonName*.xml
|_ *AddonName*.lua
|_ (possibly others as well)...