Blogging is really boring. It can be kind of cool to read some blog posts, especially if someone knows what they're talking about and are passionate about it, but most of us are just not that interesting to have lengthy topics nor do most of us have time to develop and articulate them well. So in the interest of sparing you a blog post I will outline the top 3 reasons why blogging is always going to have a niche status for particular areas but discussion groups will rule the day in the Blogosphere.
This image below of men on a scaffold describes collaboration on 2 levels - imagine the man on the top controls what everyone beneath him does and while people will try to convince him and those in between the bottom and the top that what they want to do is best, the man on top controls all. What discussion allows is for people to move up and down the ladder to work with the person that is on top to create the best product possible. This I believe leads to more engagement in work and promotes more creativity.