Simply by answering and editing questions in other categories. Over time the categories will change
On this site you will have to search what you are looking for. That is if it is not in one of the categories already listed.
It depends how much you are active in each category, it can go to every category. Only three.
The Supervisor overseeing the most categories is probably Jason. He supervises around 605 categories!
When you go to your profile, under your badges, it will normally list the three categories you are most active in.
The numbers can sometimes change, but they are listed in the Hall of Fame. See the related link below.
There is no specific 'Jokes Category' on WikiAnswers. But there are two categories called the 'Humor and Amusemet Corner' and 'The Most Amusing Questions Ever Asked On WikiAnswers' where you can post cheesy questions or silly, but not inappropriate questions. (See related links for a link to the categories)
Chris Whitten, the founder of FAQ Farm, which later became WikiAnswers, was most likely the supervisor of the first few categories on the site. Others who would have been supervisors of the early categories are Crystal, Neila222 and RoyR.
Under most circumstances, a question will normally fit into up to three categories - there would be no point adding more.
I would say 'uncategorized'. It has lots of questions and they are always being moved to and fro.
Do you know that your facebook, likes will pay you back ?
The humour categories at wikianswers are: Humour and Amusement Corner and its subcategories are: 1) Brain Teasers and logic Puzzles 2) Games and Toys 3) Jokes and Riddles 4) Most Amusing Questions Ever Asked on Wikianswers 5) Rhetorical Questions 6) Word Plays and Oxymorons For more info, go to the category itself by following this link: http://wiki.answers.com/Q/FAQ/3244 ;
Websites are not libraries. We do not have to use any universal system. Most websites organize their content in any way they choose to do so.