KudoZ: general

I suggest requiring payment for participation in KudoZ. This would boost quality. 

There are not currently any plans to restrict the use of KudoZ to members, or to require additional payment for participation in KudoZ. However, the option is provided to set viewing and notifications preferences in such a way that you only see questions from members. Also, when you ask, it is possible to specify a preference that answerers be members.