If sources are not tagged the quality score goes down. However, if the source is not accurate you don't want to tag it. Lately, on the majority of Swedish record hints the mother's maiden name is listed as the surname of the children, even though no surnames are listed on the actual record. (This adds more confusion to already complicated naming)

I choose not to tag them as they are not correct. This is really frustrating! As the record is correct (and is indexed correctly) but the record hint titles and content descriptions are not and that is what you are tagging.