start with your known wallet address, then make a deposit, any amount, into your exchanges deposit address. now follow that on the blockchain. your coins will set there for a few minutes before being transferred out to a house wallet. whoops 
I asked a few people on my pool's IRC channel for the addresses they deposited their doge in with Cryptsy. I could see the transactions where they sent their doge to these addresses, but there were no transactions out. I assume that Cryptsy leaves them in the "personal" wallets until they sell them. I didn't see the expected move to a big exchange wallet. Do you have any examples of it working the way you describe? I'm not saying you're wrong, I just haven't been able to find any examples of that yet.
I emailed Coinedup and Cryptsy. Coinedup responded immediately and said that the addresses didn't belong to any of their addresses. Cryptsy gave me a form letter response:
Quote
Thank you for submitting your business inquiry,
Our team will review your request and if deemed plausible we will get back to you.
Please know that we receive a thousand requests daily and only those requests that
appear to be workable will be replied to.
Our team will review your request and if deemed plausible we will get back to you.
Please know that we receive a thousand requests daily and only those requests that
appear to be workable will be replied to.
They haven't responded to any subsequent inquiries. Maybe they are too busy. Maybe they know that the Scryptpools doge was dumped on their exchange but they don't want to deal with the controversy. I wouldn't exactly blame them, it's not their fault and there is very little they can do to remedy the situation.