What I DO know is how to use these cool new smileys!!
They are reputation comments. Basically, someone has thought that you posted something worth giving you reputation points for. You give reputation points by clicking on the little scale icon at the top right of a post (either approve or disapprove), and you can leave a comment when you give reputation.
The list shows the posts that you got reputation for, and the comments left by the person giving out the reputation.
The idea of the reputation system is to give new members and visitors an way of gauging a person's standing in the community.
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