If you look to the far right of someone else's posts (it won't show up on your own), you'll see a small + and -. You can use these buttons to reward someone for being kind, providing information, or for being an all-around great person. You can also deduct points for bullying, trolling, or other inappropriate behaviour.
As you gain more points, your forum title will change. We don't believe in "ranks" here - no one is better than anyone else - so the forum titles aren't hierarchical... they just change to something different. If you want to know what they are, then you'd better get posting. :)
You can also earn extra points by bringing in new members. If a new member tells us that a previously-existing member recommended Ink Slingers to them, we'll give the previously-existing member 100 points. The points will be awarded after we see that the new member is an actually human-being and not a sock-puppet.