In a recent interview with CNet, Sony spokesman Al de Leon has hinted at the possibility of non-game software for the PSP. “It’ll mostly be games,” according to de Leon, “but there’s certainly an opportunity to develop non-gaming applications.” While he offered no official confirmation, his comments lend credence to earlier rumors that Sony was looking at emulating Apple’s success by creating an application store for the PSP Go.

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applications other than games would certainly increase the psp's utility.
guess everybody is going the apple way by creating an app store but its not necessary that everybody would succeed