My recent trip to Yellowstone gave me several encounters with fog, thus the title of my post. Fog has long intrigued me. I'm fascinated by the mind's ability to conjure up a concept based on the lack of clarification in its' presence and I love to watch as objects become defined as it lifts. Metaphorically, I'm watching this happen as I continue to contemplate the differences between online discussion forums and blogs.I’ve been blogging periodically for some time and I’ve spent considerable time in online discussion forums. I see some obvious differences, but still wrestle with the “conversation” which can be conducted in both. As I diagrammed my own understanding on a white board this morning, I found that I really do see clear differences. However, a now dated post by Lee LeFever made me realize that the subtle difference I have been missing is between comments to a blog and replies to a discussion make all the difference.Lee provides a nice table to compare weblogs and message boards and illuminates the differences in his text post.See:What are the Differences Between Message Boards and Weblogs?