* ISBN to author/title
* Adding 'distinctive' information to the response to help selection
* xOCLC: take in an OCLC number and return the OCLC numbers in its
* xLCCN: do the same thing for LCCNs
* xISSN: do the same thing for ISSNs
* SOAP wrappers around everything
* Expose it all via OpenURL 1.0
Any ideas about what you would use? Something else along these lines?