Having repeatedly started exploratory work on building my own data based projects using various versions of things created under the banner "Wikidata" ... I continue to be unimpressed by the tools and documentation and developer experience... I love the project and its really great for Wikipedia and working well for them.<p>But while anyone can get MediaWiki going and do useful things with it... Wikidata's components are poorly explained, and in many ways actually constructed in a way that's only useful to Wikipedia. Which is a massive loss to the overall open data community.