It would be helpful if we could add sources to common names in the same way we can add them to Taxon Changes and Taxon Forms. The display would look like this, with the addition I made surrounded by a red rectangle:
as oppose to what we have now:
I do not think it should be mandatory for every name to have a source, but having the option would be beneficial. It would allow us to communicate to other users where the names come from, both for scientific synonyms and vernaculars. As someone who has added many common names to the site, I have occasionally been contacted by other users who doubt the “validity” of the name I added just because the species is not very well-known.
Additionally, it would make this guideline hold a little more weight:
If it is preferred that we include names that have been used “elsewhere” and were not invented just for iNaturalist, allowing us to add sources would help maintain accountability.