While we are experienced with communities and how they work, a lot of new members are new to communities but have been on Facebook. Frequently, I receive emails from the contact us page, expressing confusion about how to create a post, which they have generally figured out by the time I reply.
Still, I gave this some thought and I can think of a lot of benefits from featuring a 'Post New Thread' button on the Forums index page (or on other pages we develop) that would include some functionality to define the forum that the thread creator would want the post to be in.
Even if someone is w/in a forum, this functionality could at least give them a chance to think about where the post may appear before posting it, eliminating the need for the mod team to move the post later after the OP discovers he posted in the wrong forum.
The overall goal would be to make the community experience easier for first timers and members who act before they think about taking that action.
Please like this post if would like to see this either in the base code or as an add-on.