Although there are very few applications that we may need for our Intel Mac in Snow Leopard, perhaps there is an application that has only been written for the previous architecture used by Apple ... but it has a solution.
Rosetta is the emulator, which as in Leopard, will be included in Snow Leopard to run PowerPC applications on Mac OS X 10.6. Undoubtedly a detail by Apple, one thing is to discontinue an architecture, and another to forget it.
At any rate I agree with Daniel Parrondo in that the best thing for all would be that the developers who stayed in PowerPC code updated their applications to Intel code.