MLK has some new topic icons. Topic icons are those little images to the left of topics when viewing a forum. They give you some quick information about the topic such as whether or not you've read the topic, whether it is locked or not, and now I have updated it so it will show you if you've ever posted in the topic. If you have, there will be a small black dot on the icon. I had this feature disabled for a while for simplicity but some members have been requesting it and it seemed appropriate since this forum has grown so large! So now it will be easier for you to see which topics you're participating in :]
Just as a note - very old topics may not have the dot even if you have posted in them.