Tags are a cool new feature in IP.board (well, new to us! I don't know when they implemented them). Tags are a fairly common "web 2.0" feature, allowing you to categorize things multiple different ways simultaneously.
You can add tags, up to 10, in the area under the "Topic Title" section when posting a new topic. They can be separated by commas (you can use spaces in tags, so you need to separate them with commas). If you've already made a thread and want to add/edit tags, you can do so in the "edit post" screen, by using the Full Editor.
Selecting the box "Use first tag as prefix" wi