Feature summary (what you would like to be able to do and where):
I would love to be able to "favourite" an article through an optional "star" or similar available when logged in. This would cause the article to be added to the user's "favourite articles" which would be part of the new feature. Optionally such articles could be tagged with user-definable tags and/or organised in user-defined "favourite groups", similar to how YouTube allows videos to be saved to "Watch Later" and user-defined lists. Optionally such lists could even be made public for others to refer to.

Benefits (why should this be implemented?):
The reason this would be beneficial is that it would provide a single repository of links to articles a user may be interested in but has no time to read at the time. It can also be used in organising articles for research/study. The use-cases are many.