It appears Facebook may be working on post deletion. I'm not sure how that's going to be useful, except for event-based information.
“We’re running a small pilot of a feature on Facebook for iOS that lets people schedule deletion of their posts in advance.”Facebook Tests Post Deletion In Certain Areas [thenextweb.com]
buckworks
2:17 pm on Sep 11, 2014 (gmt 0)
It could be useful for posting about just about anything that is valid for a limited time.
It would be an improvement if the time frame for automatic deletion could be set longer than a week, though.
JonnyMP
4:28 pm on Oct 22, 2014 (gmt 0)
it would definitely work for creating giveaways that need a code for a limited period of time, or contests..