There should be an app or service that collects all the links to news articles and blog posts that you’ve ever shared on Facebook or Twitter, then goes and fetches the original pieces. It would then sorts them by date, theme, topic, site, etc., creating a personal newsmagazine-time capsule-archive of sorts.
Facebook does offer you the ability to download your entire profile, but this would be a much more specific service.
I’ve been sharing links to interesting stories for nearly six years. I’d love to go back and check everything out and see how my interests have evolved.