Popular Niche Blog (Wordpress)
Paid Membership area (Wordpress + Wishlist Member)
List management / email marketing (Aweber)
I want to add a good forum that's open to the public that integrates with WordPress and AWeber. This would allow me to get people signed up for free with the forum, market to them through AWeber, and seamlessly upgrade their existing WordPress/forum accounts to paid memberships upon payment at any time.
Any suggestions for forum software to do this?