Maybe anonymity might be one of the benefits of working with a selling agent. I agree that an offer that’s too low might alienate a seller, but as long as the buyer remains sight unseen, it should help. And if you have a good agent he should be able to convince the seller’s agent down the road to stay out of the emotional stuff (i.e. do you want to sell your client’s house or not?).
Also, I understand the notion of “special” properties, but in San Diego, I find it hard to believe there’s one that’s listed in the $400,000 price range. What does it have, granite from another planet? (say it out loud, sounds kind of cool…)