[@anointed Participant 14 years, 9 months ago]

If you are using WordPress 3.3 and the latest bbPress (I use the nightly download), then you can turn on the tinymce editor instead of the standard textfield input for creating topics and replies.

You would then need to grant permission to the different roles that you want to allow to insert images, either via links or the upload system.

There are user role plugins that can help with this which are actually built for WordPress, but work for bbPress just fine.

Keep in mind that it’s not usually good practice to allow regular users to upload whatever they want into your media system.