Since Best Buy competes mainly on price with the other big retailers, don't you think opening up all their data could be a bit risky? How long will it take for

Since Best Buy competes mainly on price with the other big retailers, don't you think opening up all their data could be a bit risky? How long will it take for someone to start tracking the prices of all their products, and then optimize when customers should buy? (a la farecast.com)