What account are you wanting someone to post from? Are you willing to pay upfront and/or escrow the "fee" for posting?
I can pay upfront to trusted member. I will prefer using escrow.
Even if you are doing this there will be a risk for those who accept this job. Your account might get tagged as well if this account that you post from doin some fraud thing in the future, even if you use vpn or the other thing still there is a risk for that and it might not worth the 0.05 btc that he offer