Hi,
Geekiness warning: this email mentions software in general and free software licenses in particular. It mentions them because it's a useful example, but the ideas can be applied to many other domains.
Automatic generation of list articles is frequently named as one of the main use cases of Wikidata. There is, however, a particular type of list articles for which Wikidata may be even more useful: Comparison articles. You can find many examples of these at Category:Software comparisons in the English Wikipedia.
It can be used for comparing cars, athletes, political candidates and many other things. I frequently use such articles to help myself choose software that I will use. Here's what I do today to search for software, and what I would love to see supported better using Wikidata:
* I always prefer to try Free Software first. Today I usually go to such an article, sort the table by the license column, and then start comparing features that are important to me. * Very often the different groups of features appear in different tables, so I have to scroll up and down a lot. * Very often I quickly narrow down my search to a small number of products, but there's no easy way to remove the products that I decided not to use from the view, so again I have to scroll up and down a lot.
Doing the above using a query would be very useful. I would be able to quickly eliminate rows (products) and columns (features) that don't interest me.
-- Amir Elisha Aharoni · אָמִיר אֱלִישָׁע אַהֲרוֹנִי http://aharoni.wordpress.com “We're living in pieces, I want to live in peace.” – T. Moore