I'm using SMF and i really want to convert to another more capable forum system. I've been looking for a long time, but i can't give up certain crucial features on my forums which have been operational for almost 7 years! I don't want to lose the ability of adding tags to topics. And i also need the Similar Topics feature, which lists 5 topics at the bottom of the thread, related to the topic that i am now viewing. Do such modifications or features already exist on XenForo? If not, then this forum software is not for me, and i'll have to keep looking.