Re: If I built a website for Alt-Coin Escrow would you use it?
I was already thinking about a site like that, but a completely different system 
My idea: Something like an exchange
1) Both sides will create a profile
2) They will choose the person they want to trade with
3) They will choose the currency (each side another)
4) They will input their wallet address
5) They will send the amount of coins requested by the other side to a address proposed by the site
6) In meanwhile, the other side is doing the same thing
7) When both transaction person=>site are accepted by the site, a big green button will appear : "Are you sure do exchange XLTC for YBTC with PERSON_Z?"
If both sides accept this, the money will be send automatically to provided addresses (transaction "site=>person")
9) There will always be a big red button "stop the trade" and both sites will be refunded
Unfortunately I don't have time to make it work right now, so feel free to use my idea
My idea: Something like an exchange
1) Both sides will create a profile
2) They will choose the person they want to trade with
3) They will choose the currency (each side another)
4) They will input their wallet address
5) They will send the amount of coins requested by the other side to a address proposed by the site
6) In meanwhile, the other side is doing the same thing
7) When both transaction person=>site are accepted by the site, a big green button will appear : "Are you sure do exchange XLTC for YBTC with PERSON_Z?"
If both sides accept this, the money will be send automatically to provided addresses (transaction "site=>person")9) There will always be a big red button "stop the trade" and both sites will be refunded
Unfortunately I don't have time to make it work right now, so feel free to use my idea
I think this is an excellent idea; the exchange could make a little money by charging 0.25% to each party.
To the OP: if you have the required skills this is the way to go, eliminating the need for human escrow
Well isn't this basically how all exchanges work? You send your coins to the exchange's address, then you list a price you want to sell at, someone wants to buy, they have sent their coins to the exchange's address and the exchange then sends the coins to the appropriate parties while maintaining a small fee.
Now, what the automated escrow idea could do though, would make it easier to do private deals without advertising the price you're selling at.
Still, as I commented earlier, human escrows can get set up way faster than coding in new coins each time they are released. But still, a pretty good idea I think.