This is A Wiki Web
A Wiki is a collaborative web site that can be edited by anyone (tho you'll actually need a password on this one :-). Wikis are great for building up a wealth of information about a subject by pooling the substantial resources in the community. A Wiki can be used to help generate new ideas or document existing ones...
You're reading the "FrontPage" which in Wiki terms is the homepage of the site. If you find yourself getting lost in the Wiki, you should be able to find a link to the Front Page in the left hand navigation column at most times, and in the footer at the bottom of the page.