I want to sell bitcoin. I have 12 BTC that i want to sell. I only accept WESTERN UNION payement.
Let's give him the benefit of the doubt (even if it's a waste of time doing so).
So OP, who is the escrow who will hold and keep the bitcoins safe while someone here sends you funds by Western Union? Given that WU imposes limits on transfer amounts, I'm assuming you want to sell the bitcoins incrementally or in tranches?
I am especially obsessed about the escrow part and I hope you will not make this a 1-post disposable account. Explain and discuss the escrowing part of this transaction. Or did you have something else in mind? Skype privately with the naive here? Trick them into sending the WU upfront by showing fake screen shots of blockchain balances or a watchlist address of someone else's 12 bitcoins?
Be man enough to keep your thread alive. It's the least you can do before someone paints your account red.