As of now i see a lot of newbie offering some task and they will pay for bitcoin but no OP paying those users who already did their task offered and i think this would be a lesson to more users that do not take any risk by doing task if someone offering specially if it is a newbie.
Exactly my thoughts. I think that the forum moderators should place some restrictions over the newbies regarding posting jobs, especially without funds escrowed with some senior trusted forum member.