Just going to a fresh install of MediaWiki/WordPress/etc is scary for users who've never used them before. They need some handholding, and one way of doing this is by using the platform itself to show what it can do. e.g. some pretty blog posts in WP, some nice articles in MediaWiki. The blog posts could be about WordPress itself and talk about what it is and how to use it
Just going to a fresh install of MediaWiki/WordPress/etc is scary for users who've never used them before. They need some handholding, and one way of doing this is by using the platform itself to show what it can do. e.g. some pretty blog posts in WP, some nice articles in MediaWiki. The blog posts could be about WordPress itself and talk about what it is and how to use it