Looks pretty reasonable, although for me personally the real question will be how good the data organization / searching / maintenance / provenance / exporting

Looks pretty reasonable, although for me personally the real question will be how good the data organization / searching / maintenance / provenance / exporting are. There are a number of open-data portals with a nice front page backed by a not-as-nice archive, and if you use it regularly that matters a lot more than the first impressions of a nice web design. For example, the French government's open-data portal [1] has a pleasant interface and a nice search, but much of the data itself is miscellaneous files they've received from different departments or cities, not normalized into any kind of standard format. I can grudging overlook a lot of it being in Excel rather than some more portable data format like CSV, but much of it is even inside PDFs rather than available in a tabular format. [1] http://www.data.gouv.fr http://www.data.gouv.fr