We're doing some exciting new things with tags but it seems that adoption to use them has been slow. I'd like to encourage everyone to please start tagging your threads. The more people who do it, the more they get noticed and other people start.
Tagging is a great way to drive extra traffic to your threads. The tag clouds at the bottom of the page can also be built to reflect related content, and member profiles have tag clouds that demonstrate an overview of what that member likes to write about.