Feature Request: 3 tiered forums

Example:

Forum (top level) Elektron Gear - Machinedrum - Monomachine - Octatrack - Sidstation Support - Feature Requests - Site Bug?

etc.

By doing this one could post to ‘Elektron Gear’ and also associate it with the ‘Machinedrum’ sub forum. So visitors can either view all the for the forum topics either by Elektron Gear, seeing all the forums underneath it, or just a particular sub forum. Would also improve search.

See screen capture for an example: http://cl.ly/8zv4

Thanks!