I don't understand why there is so little participation in these forums. Here's a idea about how to market it:

I get a daily email from Reddit, a huge site of forums on every topic. It has 1 new post from each of the forums I usually look at to entice me to go to that forum and participate. Daily would be too much but a weekly email just about postings in the forum might develop more interest and participation. It must be separate-on a different day from the weekly newsletter type email and only about the forum.

I'm beginning to feel awkward about all the posting I do as if this is becoming my personal sounding board and I'm the only one reading what I write.