I have found lots of post on Freebie section and lots of members are offering free income sources through the threads. But, they often don't mention or hided the link on the post. They just ask for PM to him or her if anyone interesting on it. What you think about it? Suppose you're offering anything and asking for PM, what will be your benefits if thousands of members are PMed you and request for further information or link?
As a rule of a thumb I disregard those threads that only offer information through PMs, seems shady to me right of the bat...