Quick site announcement: I've updated the "How to Use This Site" post linked in the left sidebar, adding a new recommendation*...
See that "actions" link under every comment? Click it to access the "Rec" function. When you see a comment you like, REC IT. It's much better than throwing up a "+1" comment, because after a certain threshold, the comment comes up green. You can also Rec a FanPost or FanShot. Garner enough Recs, and it goes to the top of the the FanPost or FanShot pile.
(*See what I did there?)