An addiction to searching subjects on Wikipedia, Wikiquote, or any by-product of the Wikipedia family. A person with a wikiddiction will spend endless hours on the computer, just reading biographies or looking at pictures. They need help.
Tom! You have to help me! My wikiddiction has gotten worse- I just read the entire article on the history of the Lima bean.
She found all the information she needed for her homework on wikipedia; "what did people do before wikipedia??!" She admitted she was turning wikidictive.