I've just launched a new forum (so not much content at all yet) and would love to hear if anyone has any feedback from a point of view of experience XenForo users.
So far it uses Flatter: http://xenforo.com/community/resources/flatter-1-2-responsive.2019/ with several small modifications and social network authentication: http://xenforo.com/community/resources/social-network-authentication-twitter-google-vk-com.645/
Oops, almost forgot, also this icon set: http://xenforo.com/community/threads/square-simple-node-icons-speech-bubble.53980/
I plan to have a photographic header background at some point, but my goal has been to keep it clean and clear.
Thanks in advance...