I know this is about blogs and all that, but, buddypress gives you the ability to create a "social network" and forum centered around your wordpress blog. Many that use their WP installation as a site might have a few advantages, but I was thinking about this.
Would it be a good idea to have your own little social network on your blog, and then back it up with a forum? Would it be a good way to either advertise or market your blog/site, by allowing people in your specific niche to network?
I am open to suggestions.