The certs being delivered help take them away from the broker who can use them to "hypothocate" or use them for anyone to short the stock. I hate those games, but other than having a pretty peice of paper, not much good comes from it.
The other problem with certs is that some brokers make you wait until the cert clears DTC so, there is always an issue selling the stock. You'll note that isn't a problem for me, because I usually keep my stock for a long time, which is why I don't mind paying extra today for something that I want to make sure I can own.
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