Hello,
I'm the dev for Credits (
http://getcredits.io /
https://bitcointalk.org/index.php?topic=614917), a made-from-scratch cryptocurrency which is scheduled to have a presale starting on Friday, and my escrow fell through a couple days ago. I was pointed in your direction as a possible replacement.
Also with the multisig, the best way to employ that would be the following:
Have the buyer and seller of the goods provide you each with a pubkey of a bitcoin address they own and generate a 2 of 3 address using their pubkeys plus yours. This way any transaction you make has to be signed by either buyer/seller so you cannot run away with the money, making it almost trust-free. Additionally it makes things easier for you as if the transaction works out OK the buyer/seller can sign the transaction themselves so you don't even need to do anything.
That's an interesting method I may implement in the future. However, there's a small learning curve for the user seeking escrow.
I actually implemented this in an easy to use way for my presale. You can find the code here:
https://github.com/CryptoCredits/PresaleCmdThe escrow and seller both generate a private/public keypair separately, publishing the public key, and then anyone who participates in the presale has a 2-of-3 multisig address generated where they control one of the private keys.
In my case, this is also how they will receive their credits when the Credits network goes live.
Sounds great! I can give you a hand, PMed.