Certified Contributor II
CCs can now add external links to (at least release) entries. My general rule of thumb is to add when there are no (or no "major") sources or I find additional "major" sources during my confirmation research.
In the rare situation I add a source for a related release (e.g. different market, reissue), I will add an appropriate descriptor. This is typically done in cases where I believe some link from (e.g.) Discogs or any major source is better than no/weaker sources.
Looking for guidance on this. What triggered this post is a release with only a RYM source. Since one of the two performing artists is coded as Australian, I added a Discogs link to the Australian version of the single and labeled it as such; however, an editor rejected: