Add Tags to MediaWiki and showing a tag cloud on the front page?

I w开发者_如何学Cant to add "tags" like in delicious to mediawiki pages and then show a tag cloud on the front page using this.

How do I do this?

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There are a few extensions along these lines:

• http://www.mediawiki.org/wiki/Category:Tag_cloud_extensions

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Extension:Nimbus can add the cloud to the front page or any page. In the discussion page http://www.mediawiki.org/wiki/Extension_talk:Nimbus#Nimbus_at_Sidebar you can find how to add it to the side bar.