How Do We Get More People To Engage In BP Discussions?

[Bryan Hancock]

I did a quick check and there have recently been over 500 people (within the last day) people on BP. Most topics have 5-15 main players comment back and forth and a variety of lurkers that just view things.

How can we get more people engaged in conversation on topics? I never have understood people just lurking and not participating. What are the main reasons this happens and more people aren't involved?