A wiki is software that allows registered users or anyone to collaboratively create, edit, link, and organize the content of a website, usually for reference material. Wikis are often used to create collaborative websites and to power community websites. Anyone can make a wiki about anything.

Getting Started
There is an entire list of wiki software for you to choose from. Pick the one the best suites your needs. I like MediaWiki the best. It’s widely used and free.

Chosing a Niche
Pick a niche that interests you. Try to think of something that other people will like to contibute to. Also look for a topic that doesn’t already have a wiki. One of the wiki’s a visit often is Complete Mass Effect. It has everything about the video game Mass Effect that you can think of.

Building Content
If you’re an expert on the subject, then go ahead and start writing the content yourself. If you aren’t then browse forums and websites about your wiki niche to look for information. Use forum threads as article titles. It’s a great way to start building categories. Once you have a lot of categories, people may be more inclined to contribute.

Marketing a Wiki
If you have other websites about the same niche as your new wiki then this will be a lot easier. Just promote the wiki on those sites. If you don’t, then you will need to rely on the standard website marketing concepts. Link building, content, social networking promotion, forum signatures and word of mouth.

Once you’ve got that going, just sit back and wait for the search engines to index you and you’ll be getting traffic in no time.