Here in .nz the national library runs a local aggregation service http://digitalnz.org/ which has quite good penetration into schools and so forth. It provides some metadata quality reports such as http://metadata.digitalnz.org/nzresearch/127 for sources it aggregates (that report is actually quite a bit dated). My experience of these reports is they're useful in inverse proportion to the diversity of the collection being reported on. The narrower your collection, the more real issues are going to be caught. cheers stuart -- ...let us be heard from red core to black sky