well yeah thats why there are mod forums if other users find your idea interesting and want to assist. I cant say whether thats the only place you want to mod as you would code whatever mod up to act the way you want.
well you would have to query in some manner the user posts and define the variable say $userposts.
But the payment line is this twice in that file
Code:
Content visible to verified customers only.
If you define the variable $userposts you would change those lines like this
Code:
Content visible to verified customers only.