Why on Earth would I want to contribute to a wiki

There are many good reasons to be involved in Wikipedia:

• It's fun.
• It's easy.
• It's educational.
• It's social.
• You can correct other people on the spot without asking their permission!
• It's exciting. Wikipedia has created literally thousands of articles in the mere months since its inception--over 1,000 per month, in fact.
• It's interesting to share your knowledge with other people, particularly knowing that others can instantly edit or react to what you've written.

See also why Wikipedia is so great.