I am not sure if there is an answer here about this. This addresses the issue, but in a different way Related Questions. I'm not referring to flagging posts as duplicates.
If there are some closely related questions on Stackoverflow, is it ok, good practice, bad practice to provide manually posted links to related posts in the comments?
I've done this in a series of questions I've asked that are related, but not identical and linked them with other similar questions, as I figure it helps people searching.
Is this something that should be encouraged?
edit: as noted in the comments by @Richard J. Ross III the links showing up in the related sidebar are not always the best choice for related posts.