Simpleboard is a safe choice because it is already part of CB. vBridge is promising but I think it takes time before it is stable. SMF on the other hand would be great addition but it already works with CB to some extent. There's been some heated discussions on the SMF forum and the misbehavioiur or one or two CB fans basically destroyed the CB's good image in the eyes of SMF-dev's. Please read more here:
www.simplemachines.org/community/index.php?topic=57415.0
1) The bridge works with Community Builder. There is code in the bridge to ensure that users are entered into the Community Builder tables. This is nothing new.
2) SMF is a stand-alone forum product. It is not a Joomla component. Perhaps when Community Builder starts expanding into products such as Xoops, PostNuke, and PhpNuke, I'll take another look. For now, see point #1 above. I think the work I'm doing on PhpNuke is going to bring in far more "potential users" than Community Builder ever would. (And those users are likely to have a more respectful tone in their posts.)
3) The whining, complaining, threatening to use other software, and now bickering in regards to this matter are sickening. If this is the type of people for whom I would be making a product, I would look for another market.
4) As Chadness pointed out, there is nothing stopping anyone else from creating a CB extension that does exactly what they want.Â