A lot of people in this thread are concerned about the TOS and whether or not it is enforceable. But did anyone notice that he claims wolfram served apple a DCMA notice for the app? That law was supposed to be for copyrighted artwork. Aren't wolfram alpha, and other sort of dynamic procedural output from websites more of a service than an artwork (or a 'work' as it is probably termed in the DMCA? It seems a bit pretentious to refer to the output of something like wolfram, google, etc. as a 'work.' I could see a website in it's entirety as a 'work.' But the output of a service doesn't strike me as a 'work.')