I find the structure hard to use, there is no one place to just ask your question in a sort of conversation similar to facebook.
In the current social media environment people want info right away without searching multiple threads.
Nowadays people are lazy, forums are somewhat outdated. they are still needed but many people prefer the facebook style one long conversation.
It is similar to the popularity of the famous drudge report.
Also alot of the info on the forums are outdated.