It should make things easier later on when and if bitcoin becomes a more main stream.
As far as something that makes paying for purchases using your mobile something more familiar, then yes this will help make the use of a Bitcoin app for payment seem not that much different.
Apparently not just any PayPal user can pay using these terminals. You first need to enable in-store checkout on your PayPal account:
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https://www.paypal.com/webapps/cobapp/prodsetup/posAnd also, with the methods to cash out bitcoins to PayPal, this is almost like another form of the BitInstant PayCard .... cash out to PayPal prior to making in-store purchases with it. While the methods to do this are becoming relatively plentiful (FastCash4Bitcoins.com, VirWoX, BitInstant), those methods are relatively costly. Over-the-counter trades through #bitcoin-otc can help bring the cost down to 0 (where both sides trade at market rate, payment sent as a "personal/payment owed") but that carries risks like the counterparty doing a chargeback or account closure/funds frozen on either your side or your counterparty's side.
But, in a pinch, that option is better than nothing!