I sometimes think about what $PERSON said in 2012, and then I want to go back and check what was really said, or send a link to someone because it was just That Good.
Sometimes $PERSON is myself.
"On this day ten years ago" can be fun too, and you can run across gems you had forgotten. My microposts, however silly or trivial, are not ephemeral to me, or not any more than circumstances make them be.