I spend a way too much time on facebook. Its virtually open all the time on a dedicated chrome / firefox tab. Lolz.
Here is the snapshot of an update from a friend that was duplicated. Posts like this take a lot of visible space on the feed space. While the more important ones get pushed down.
If that is happening all the time I must say it would annoy a lot of people. It is very probable that someone sharing a feed item will like it too. In that case pushing both the action to our news feeds is not a smart thing to do.
I will be reporting this to Facebook – with a hope they fix it ASAP.