About Wiki hosting
MediaWiki is a web-based wiki software application used by all projects of the Wikimedia Foundation, all wikis hosted by Wikia, and many other wikis, including some of the largest and most popular ones. Originally developed to serve the needs of the free content Wikipedia encyclopedia, today it has also been deployed by companies as an internal knowledge management solution, and as a content management system.
You will be able to use your wiki with other portal components: Forum, Blog and Gallery. Logging in at some portal component will log you in at other components.