How many time did you received a private message from a user with no post, or very little post asking you for private help because he didn't want to post code online.
Normally I tell them that for private help, is just like work, so I need to get paid (in advance), or they can ask the question on the forum like everyone else.
Most of them just end the conversation there, but sometime, I get reply about the fact that is my DUTY to help someone, and I'm cheap not to do so, and I should feel ashamed to ask money for private help.
But the worst case is when they come back, again and again without understanding that I won't help them.
So I was thinking, could we limit / forbid user with no post or very little post to sending private message?