Svetlana, thanks for suggestion. I think we should create a portal similar to the Structured Data one, and put some examples there. Deciding on the name is difficult :) "Commons Datasets" does sound good.
There has been a very prolonged discussion on where to host this feature -
https://meta.wikimedia.org/wiki/User:Yurik/Storing_data. Wikidata would have been a good choice, but users expect all the data there to be in public domain, and we may add more licensing choices later.
> An inline example with English commentary -- straight on the first page about this new technology without making users click links -- could be nice. The text you typed up does not seem to be on a wiki page, so I am unable to edit it...
Which page are you referring to?