I was looking for a way for users to identify topics of different type or content and I found the Advanced Topic Prefix MOD. Now it's terribly easy to categorize topics inside a board

I love the filter options too, so the users can view only the category of topics they want

The only thing I miss is an option to filter by prefix in Search too, but I hope that will come in v3.0 

So my conclusion is, VERY GREAT MOD!