I guess this is going to happen definitely for sure some time in the future. My guess is 2015:-
Imagine you are walking in front of a big/small retail store suddenly you receive a crazy offer on the product that you have been looking to buy. You click yes. Enter inside the store for pickup without having to pay for it as its already been paid by you on the phone, or you can choose a delivery with to your house or any address.
Everything real time.
questions: how do we achieve this? The answer is CLOUD
You are walking in front of a big/small retail store suddenly you receive a notification with the items on sale, tells you whats new in the store or have a customer specific sale offer.
You are inside the store and the store knows which area in the store you spend the maximum time. You are looking for a specific colour shirt or size and are unable to find one. You send a query on your phone, if available its ready for you to pick up at the cash counter. If unavailable it will be delivered to you at your address.
.. more scneario's to come