Thanks. Glad you liked it.
maybe you should add an option to choose between deals that involve "digital goods" and "physical goods".
Where in digital goods trades the buyer won't be able to get his BTC back after a month, simply because the risk that the buyer screws the seller on digital goods is much higher. After the seller sent the digital gift-card/invite-code/whatever the buyer still could say "Haha, you sent me the ukash code, fuck you seller i will not release the coins" but he wouldn't get the coins back either.
On physical goods instead, it should imho be possible for the buyer to get his BTC back. After the buyer sent the BTC to your escrow the seller could pack up a brick and send it to the buyer with a tracking number on the package for "proof" that he sent the package. In this case the buyer could get his money back. If they buyer tries to screw the seller by reclaiming his BTC and keeping a valid good, the seller still would have Name+Address of the buyer to take legal action.
I hate to recommend a competitor, but I think BTCrow has much better options if you're sending expensive physical goods, using tracking codes, purchasing insurance, and all that. They also charge more, which as I already said, I think if fair based on the services they provide. Performing arbitration when one person says "he sent me a brick" and the other says "no I didn't" introduces cost in both time and money that I'm not able to deal with at the time. (And to be honest, because of the differences in our services, I don't really think of them as a competitor. So I guess I don't hate recommending BTCrow in some cases.)
The note field is for your personal use only and is optional. Some people may not want to disclose the terms of a deal. I do use randomly generated UUID's for all deals so that a random person can't just bounce around the site looking at deals. Even still, some people will still want to be vague or keep the info blank. Other people will want more details documented. A generic 'note' field seemed like the easiest way to get that working for everyone.
Also keep in mind that because you can enter whatever you want and the seller has no control over the note, it doesn't constitute proof of anything in case of a dispute.
That's been the biggest request feature-wise by far. I'll hopefully roll out a pop-up calculator this weekend. I was going to do this last weekend, but ran into browser compatibility problems.
Thanks again for using the site, and thanks for the feedback as well. It's always appreciated.