We're building a site with a recipes catalog and we'd like to allow logged in users to "star" an entry/recipe and then be able to view a list of their "starred" or "favorited" entries. Any suggestions on how to go about this?
In addition to Lindsey's recommendation, Craft Like by Dukt might also be useful for this. It was updated recently for 2.5 and is open source.
This definitely sounds like plugin territory. I'd recommend Curate, by Lori Goldberg.
* Disclaimer: I haven't personally tried it.