You should reread the downloads rule. Nowhere does it say your posts need to be related to any one particular subject. You can post about anything. Useful means not posting rubbish in an obvious attempt to reach 5 posts. Most people overlook the fact that you also need 1 "like".A new member, who needs the mock exam paper and yet I have to post 5 times! Useful posts for someone new in the industry is quite a task!