I haven't been regularly for long, though I have been part of the "running scene" for about 15 years. That said, I've visited many different running forums.
I have enjoyed some of the threads on here, but the problem I see is that whoever the mods are here make it very frustrating for the readers. When I log on each day, I see dozens of new threads, most of which have nothing to do with running. And the responses to many of those are so "sophmoric" that it becomes a waste of time to even continue reading other responses.
Then, while those are left there, some with hundreds of responses, it seems whenever Dane R's name is mentioned, the thread is deleted. This truly gives this website little credibility when that happens.
And the final reason why I think people are turned off by this site is the lack of "acceptance" of other "hobby joggers". Even though I will be running in Boston this year, going by what qualifications I need to be to be included around here, I'm included in that "hobby jogger" category. If I'm in the top 10% of all marathon runners, which I know I am, then these boards must only be for the top 1%. But, I think we know that is probably not realistic to those that actually post on here.