Yeah, it’s just like a web feed, but without the summaries, or the article text, or the original URLs.
It’s sad that people use Twitter so much for something it’s so terrible at. G+ is actually much better for link-sharing than Twitter, and doesn’t have the Facebook “friend” crap. The BB links and pictures all seem to end up on G+, so people who don’t understand web feeds but do understand Twitter’s deficiencies might want to give it a try.