A while ago, i wrote some extensions for the MediaWiki software. The extensions evolve around the fascinating Semantic MediaWiki extension. ShowIncomingRelations adds backlinks for semantic information. CreateVirtualPages creates pages that are referenced by semantic information, but do not yet exist - to show backlinks. The most complex extension got the name SemanticAnnotations and allows to Annotate other subjects from within a page.

I have been sponsored by a guy called Kelly Terry Jones. He tested the extensions and payed me some money to code them. We agreed to release the extensions under GPL, so here they come! To avoid redundant information, all documentation about the extensions is kept on the mediawiki.org site.

ShowIncomingRelations	Backlinks for semantic information. Requires the Semantic MediaWiki extension to be installed.	Documentation on mediawiki.org
CreateVirtualPages	Create pages referenced by Semantic MediaWiki tags. Requires the Semantic MediaWiki extension to be installed.	Documentation on mediawiki.org
SemanticAnnotations	Allows one page to annotate other pages. If the target page does not yet exist, it is created (as by CreateVirtualPages for SemanticMediaWiki). No dependencies.	Documentation on mediawiki.org

I know these extensions are not bug-free. But i hope they might be useful for somebody. If you find bugs, please report them back for others to profit from your information.