You know what is the saddest part about XenForo for me? The fact that I can't really use it . Both of my major forums are vBulletin 4 upgraded and both run vBSEO. Both web sites are so integrated into the software that it makes it almost impossible to switch to another application: One runs a script that that integrates vBulletin into a ban system for my gaming servers. One has a complete review application running off of the vBulletin system (integrated via usergroups, permissions, and registered users). Is anyone else out there feeling the sting of having this great software available but unable to use it due to various circumstances that keep you latched on to a lackluster product? What are your reasons? And for those who actually bit the bullet and switched regardless, how has your decision impacted you?