
Radar could essentially show stealthed opponent locations. All client information of character locations is sent to your computer.

Using radar to chase down stealther opponents usually choses to be an unwise ability. Most plugins don't have them on ping until you've 'uncovered' them. This is a wise decision on the creators part, otherwise your use of such an illegal program would quickly cost you your account.

The best plugins have character information such as class, race, guild, realm rank, etc. for when you click their ping dot. Some even use letter/color labels on the map for you to quickly identify what you will be facing.

Using such advanced plugins may cause you more difficulties than advantages. The temptation to out maneuver a crit attack or jump a few stealthers for realm points could get you caught more easily.