OK.... I will, in part, take back what I said...
I meant to suggest big ticket items
and the ability to remain somewhat untargeted.
Through a site, such as bitpremier, it does seem possible to liquidate some coins through a site... and it does seem possible to stay somewhat anonymous... However, if bitpremier is engaging in know your customer practices (and I base that on its various affiliates), then it may NOT be easy to relieve oneself of ill-acquired bitcoins...
From what I can see, I would NOT feel very confident going through bitpremier... unless they just put you in contact with each other... and say, go at it on the side.... harder for any service to make money, if they let parties engage in their own interaction(s).... Craigslist seems to do o.k. by letting parties engage in their own interactions...