Alright guys, here's where we're at. The mixer wasn't actually functioning properly, and after talking to the dev about the concept we really wanted to sever all ties from the sender and the receiver in the blockchain. This meant coming up with a completely new implementation. The dev is working on that now, as he has been all day. We should be able to test it in a day or two and we'll be looking for volunteers to test it once we're satisfied it works with our own coins. I'll post updates on his progress. In the meantime the site will serve as a concept page and effectively works as a send proxy.
Here is an infographic showing the method that is currently being implemented for anon.pinkcoin.info - though please know that it is presently not live. It is a completely centralized method that is specifically designed to work through a website, and not among the methods that are being discussed by our team for inclusion in the wallet.
So basically we're planning to seed the sending account with a million coins. When you send your coins to the address the website gives you, it will go into the receiving account. Then the coins are sent to their destination from the sending account with that million pinkcoins we seeded into it. Over time the receiving account will fill up, and the sending account will deplete. When the sending account gets less than half full, the whole thing flips, and the coins that were pooling up in the receiving account are used to send, and the original send account is set for receiving so it can pool up more coins.
This way, the coins that you send never actually get to the place you sent them to. Someone elses coins are sent instead, and the transaction is instant. And eventhough the thing will tend to flip back and forth once the receiving and sending accounts are roughly equal in size, the oldest coins are always sent first, so there are no coins ever sitting around doing nothing. There's a constant flow through the million coin circulation system where none of the actual transactions are connected in the blockchain.
With a million coin pool, the largest transaction the system can support is 500k pinkcoins. Send more than that, and the coins will just bounce back to you - that will just be a temporary failsafe while the whole thing is still experimental. Eventually, once we're certain that the core is solid and stable, I'm thinking we can just have large sends bounce to a feeder account that will break down the coins and send it through the system in random sized smaller chunks.
We're happy to accept any criticism on the concept. We're always looking for input on things we may not have thought of and how we can make it cleaner. I need to get some sleep now but I will reply to all questions, comments, and concerns regarding this system in the morning.
Well, my name is Sony Sasankan. There is only one name like that in the entire world and a quick google search will bring my entire life history for you to vet.... including pics, address and phone numbers too I think. I'm not exactly the "dev", but I kinda run the thread with a few others that I've not bothered asking for identities. Their BTCtalk names are sumgye, fayoling and cryptocayce. I'm the noobiest of the lot... and more of less take care of all the design needs. Like the logo, ANN page, that anon diagram... that's all me (pat pat pat). I also specialize in making announcements in big bold letters 
VERY GOOD JOB DEV! 
