If the forum is dependent on features and not content, then it is not worthwhile.  You might as well go to Iggy Planet and set up shop there.

If you make excuses not to improve your life, you will always make the safe choice, and that path leads down to stagnation.

There is a bitcoin stackexchange beta, and as mentioned, /r/bitcoin.  The advantage of these over SMF is that you can smash people's arguments into invisibility by voting them down.