Antipatterns are things that have a
negative impact. You normally want to steer clear of antipatterns. They have names like Spaghetti Code, God Class, and "The Blob". As with "normal"
patterns, antipatterns are not limited to designs. You can have management and organizational antipatterns, too. Another thing: when abused, well-known patterns can become antipatterns. One frequently abused pattern is the Singleton.
Here's a
link to more antipatterns resources [ May 09, 2003: Message edited by: Junilu Lacar ]