I guess if its a high profile name, you can hire an intermediary such as Sedo. I have had that happen though and about all that happens is that the Sedo person sends and email to ask you whether you want to sell it or not or just sends an offer sometimes telling you that 'if you don't sell now, you may never sell it'. ie - The service is nothing special. If you are Disney and are trying to low ball a name, it might be useful for the anonymity. Personally if someone just honestly contacts me to ask if I want to sell a name, the results are usually the best. I'd just be open and ask. Don't be offended if they don't want to sell it or want too much. And do thank them for the reply. That leaves a good taste even if you don't do anything the first time. Maybe something will happen later. Oh, and don't send a $50 offer for a good name and, in fact, just ask if they want to sell at all in the first communication don't mention a price.