tiny small poll regarding the mobile platform, it seems forums and mobiles are still not deeply linked now. Most community managers care and think their forums should be connected and usable with mobiles, but do not consider it as the main platform to target.
Historically, we can actually notice that forum software were always a case apart in Internet evolution: they were the first masterpiece of what we call now the participatory and collaborative Internet (aka Web 2., long time before any guest was able to comment a news, an article on any website. You can think for example about the huge count of news site that propose their members to discuss about an article right into a connected (and automatically created) topic in their site forum.
However, at the opposite, it took long before social networks were deeply integrated into our forum topics and threads... And actually, when we are talking about integration, it's more a classical Addthis toolbar you will see giving a simple way for users to share a given topics. The next revolution of a single and merged identity on Internet is probably the next big step our forum software will have to pass (several of them already did it: IP.Board, Xenforo,...), so maybe the mobile revolution will raise after this one.