Ideas of how to get a domain into auction
I've been thinking recently as well about the situation of wanting to get a particular domain into auction if you think it will do well, and I was thinking that one could make an offer here at NamePros along the lines of: "I'm willing to sell Diamonds.com [insert your equally great domain here] to the first person to put an offer of $100 on it at Sedo, provided you're willing to wait for the auction period to end and no one else bids on it. If it goes higher, you're out nothing; if it isn't bid on, you've got a great domain for a great price."
Alternatively, you could even do a "place offer" swap, with no obligation to buy or sell. That is, something like: "I'll place an offer of $XX via Sedo on one of your domains, and you do the same for one of mine. If either domain doesn't get bid up, the original owner will retain ownership of that respective domain."
Is there anything about those methods that would be truly unethical? Once you get it listed in a Sedo auction, the market takes control, and you either get what it's worth or it doesn't sell. You're only getting help getting it there, with both parties understanding in advance what they will or will not be getting in the end.
Thoughts?