Why not use Ebay...you can state that you accept Bitcoin and the buyer and the seller get confirmation of payment...or just use craigslist(someone already stated this, but I'm re-emphasizing)...
Why not use Ebay? Because Ebay owns paypal and paypal already recognizes bitcoin as a direct competitor to be squelched.
I'd be surprised if your bitcoin-accepting ebay listings don't get banned.
They can try and ban the listings but there are far too many ways to get around that...let'em try!