Greetings. My network is planning to use WP multisite to manage our various portals. We need a forum software that will work with multisite. My questions are as follows:
1) I've heard that bbPress and Mingle Forums will perform this function. Will these pieces of software support tens of thousands of users and millions of posts?
2) Are there any other forums that integrate well with WP multisite? I'm particularly comfortable with vBulletin, MyBB, and IPB, but am open minded.