Mathway - Math Problem Solver

This article from CNET News talks about a new web service called Mathway.

Mathway is a Web calculator that not only solves math problems for you, but also shows you how it got to the answer with step-by-step directions. It's the kind of service that would have utterly ruined me in middle school if I had wanted to cruise through the stacks of homework without doing any of the actual computations.

Are there any Math teachers out there that want to comment on what this may mean for your students or classes?