But why dont put the user permissions instead of root?
This is not dangerous?
Why perm allow to put files as root?
How to know files or directories must be user:user?. Yes, Kloxo official try to set user:user but it's not consistance and no feature to set change ownership. Another issue, the code related to this ownership not work in php 5.3+ (as we know Kloxo-MR use php 5.4 as default).
So, alternative for this situation, Kloxo-MR set root:root for ownership but have change ownership feature.
It's no danger if ownership set root:root and we accessing as user. Dangerous if access as root.