Persistent Seach and Persistent Customers

If your customer could set out a series of conditions, which if satisfied, they could automatically buy a product or service, what would this mean for your company? In the example from gigaom cFares enables you to find air fares at prices you set, but the search is persistent. If it doesn't find it on the first search, it reaches out to you and tells you "hey, its available now", it may even conclude the transaction. Its going to happen to your business sector; what are you going to do about it? What is your value proposition going to be? What does this do to your existing segmentation variables?

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