Why are you suggesting to transfer using an Exchange if it says clearly in the DAO page not to do so? The recommendation is using a personal Mist wallet, eventhough it might take a half day to finish synching. If someone does not understand how to do it, better not to invest at all than risk losing all your investment. I woudn't trust letting my tokens tied to an ETH address rather than my own.
The fact is that people normally learn it by the hard way, losing their tokens. Good luck for those who want to do so.
Actually the DAO page recommends using the MIST wallet for purchasing DAO tokens but there are certain exchanges that have partnered up with the DAO such as Bittrex to make the process easier for those who are not technically minded or can't wait for their wallet to update. It is misleading to say that the DAO page warns people not to. Whilst it is obviously more secure to purchase tokens using your own wallet, using an established exchange is hardly a high risk strategy. Your post misses the entire purpose of this thread.