From the about page:
What was the average price of a house in the UK in 1935? When will India’s projected population overtake that of China? Where can you see publicly-funded art in Seattle? Data to answer many, many questions like these is out there on the Internet somewhere – but it is not always easy to find.
the Data Hub is a community-run catalogue of useful sets of data on the Internet. You can collect links here to data from around the web for yourself and others to use, or search for data that others have collected. Depending on the type of data (and its conditions of use), the Data Hub may also be able to store a copy of the data or host it in a database, and provide some basic visualisation tools.
I covered the underlying software in CKAN – the Data Hub Software.
If your goal is to simply make data sets available with a minimal amount of metadata, this may be the software for you.
If your goal is to make data sets available with enough metadata to make robust use of them, you need to think again.
There is an impressive amount of data sets at this site.
But junk yards have an impressive number of wrecked cars.
Doesn’t help you find the car with the part you need. (Think data formats, semantics, etc.)