I've had several opportunities come through the private messenger thing - one in particular was the Central Appalachia Christian News job offer. I have a lot of information about me on the site that points to published works, etc., so I normally get targeted emails from publishers. About three times I got what seemed to be a bogus thing. Overall, the yearly cost of 36.00 netted me 300.00, and I deduct the cost as a professional membership due.