Do I support leaving a link to a plugin, a description of what it does, and possibly some screenshots/examples that show how it works? Yes.
- EAMann on the other answer
Imho it's not enough to leave …
- a link to a plugin (copy paste URL)
- a description of what it does (copy paste description)
- a screenshot (copy paste img URL)
- show how it work (FAQ of the repo, description, etc. copypasta)
That just doubles the information, that is already available on the repo itself. The reason why we don't want one-liners isn't that it [all the stuff in the list above] saves one click to the user. It's that it doesn't help in the case when the original source is gone.
I personally expect plugin recommendations to also paste the relevant code from the plugin. Copypasta isn't something that should be a problem to us in a case, where we're saving the source part that solves the question/OPs needs. Point is that we want answers for all people visiting WPSE. And as we are already a valuable source, we should also try to satisfy the needs of developers. Else we'll have several questions solving the same problem with different (like) plugins, but no source that show us how it is actually done.