Currently the BackerClub forum sections that I see are:
- Introductions
 Kickstarter Discussion
 BackerClub Discussion
 Private Lounges
 Off Topic
I was thinking about the possibility of subforums added within the Kickstarter Discussion area that could be added based on Kickstarter's own project categories. phpBB does support subforums. Below is a list of Kickstarter's main categories.
- Art
 Comics
 Crafts
 Dance
 Design
 Fashion
 Film & Video
 Food
 Games
 Journalism
 Music
 Photography
 Publishing
 Technology
 Theater
That may be more convenient for BackerClub users than having to add tags such as "[Music]" or "[Games]" to their thread titles for others to know what category a project is related to. It also means not having to scroll past projects for categories I don't participate in like Dance to find new projects in categories I do pledge in.
What are others' opinions?
Should some categories like Games be split into subcategories like Tabletop and Video Games?
Any alternate category lists?
Would it be good to have something like an Ending Soon category for projects that are really close to reaching 100% in their final hours on Kickstarter and need all the help they can get?
