The "Thanks" button.
I originally didn't like it because it seems to encourage everyone to try and be a comedian, really adding nothing to the discussion. That and all the useless non-hockey related animated GIFs that plague PGTs.
Reading the Brian Burke UofC thread has me liking it, but it GMGs that people don't seem to use it. It seems like over 1/3 of the posts are people just posting "Great read. Thanks!" If you have nothing to add to the discussion, click thanks and move on.
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