Nice to see Google trying this again! It's one of those areas they have long attempts at involvement in - e.g. Google Public Data Explorer which never quite re

Nice to see Google trying this again! It's one of those areas they have long attempts at involvement in - e.g. Google Public Data Explorer which never quite reached it's potential, and Freebase which although flawed was good and was shut down after Google acquired it. I like that this is search based! The web is still the best place to publish data - in fact in my view normal Google search is still by far the best way to find datasets, even though it isn't directly designed for that. There's a link from the about page of Google Dataset Search to this help for webmasters on how to mark up content for it - although it is a bit odd, mainly showing how to mark a dataset with a DOI (so good for academics certainly!): https://productforums.google.com/forum/#!topic/webmasters/nPq4BW6iPIA https://productforums.google.com/forum/#!topic/webmasters/nP... Just metadata about data feels like a very niche thing to search to me - I'm still not convinced anyone will maintain the metadata well enough to help. Possibly will work in particular domains. Does Dataset Search have some way to search column headings, types or content (of CSV, Excel, JSON etc)? I can imagine a load of operators that would make that really powerful for finding badly meta-marked up datasets deep in the web. Would seem like the obvious extra thing a dataset search would do. Also previews please!!! Just nicely render the fist ten rows of common formats - CSV and Excel to begin with. What part of Google is doing this?