Has anyone added a forum to your blog? I am still debating over using Wordpress over a CMS like Joomla to create my content sites. I prefer to use Wordpress because I already have some experience with it. Please let me know your experience with adding a forum to your blog.
I have a forum set up for CartoonsForGrownUps.com, but have disabled it until I've grown the site's traffic to at least 500 visitors/day. But technically, it's easy enough to have a forum sitting side by side with a WordPress blog. I used phpBB to set mine up.
There is WordPress forum plugin. However, the features are quite limited. If you want a full blown forum, use an original one, i.e. phpBB, SMF or vBulletin. The only drawback is users have to register twice.
I would go with Joomla if you want to run a blog, forum, and content sit. You can customize Joomla as much as you can wordpress, and there are thousands of extensions for Joomla to make it more of a blog.
My vote is for Drupal... It is just as easy as Wordpress once you get used to it, and Drupal has so much more to offer...