I have just updated our blog to add sign-up boxes for both Yahoo and Google discussion groups that I participate in. These groups are a good compliment to this blog because it is an open format. On this blog, usually the comments stick to the topic in that post, so it might not seem relevant to ask general questions that do not relate. But joining and submitting your questions to any of these discussion groups can be the best way to ask general questions and bring up topics all on your own.
The Yahoo Group was started in 2005 and was started by George Fox. Currently there are 145 members. The Google group was started in 2007 and was started by me. Currently there are 133 members. The sign up boxes are in the right hand column of this page.
http://www.cbsnews.com/stories/2008/03/01/sunday/main3896728.shtml