I’ve written an article about Digital Education Resource Archive (DERA) which appears in the current issue of Ariadne (no. 67). It describes the impetus which led us to develop the DERA as well as some of the technical and IPR issues we encountered along the way.
There are now more than 3,300 items in DERA and we have plans to load thousands more in the months to come. We are always delighted to receive any feedback, including suggestions for enhancments or further content to include.
The article can be viewed here.
Newsam News 
I’m really pleased to see this published. It’s so much easier to refer interested people to a clear explanation rather than trying to explain it myself.