I would say forget about PHPbb 2 and 3 (very poor foundation), and wait for Wedge to come out, its will be an improved SMF fork, http://wedge.org , plus it will have a blogging system. It's perfectly legal because SMF 2.0 is under New BSD License. The developers username are Nao and Arantor, they know the flaws of PHPbb 2 and 3, ask em, they will tell you.