The National Digital Stewardship Alliance (NDSA) has just issued a report on the Appraisal and Selection of Geospatial Data; this should be of interest in a wide range of data curation contexts. you can find some background on the report, and a pointer to the report proper, at:

http://blogs.loc.gov/digitalpreservation/2013/10/new-ndsa-report-issues-in-the-appraisal-and-selection-of-geospatial-data/

Clifford Lynch
Director, CNI