Subjects-Here is a pure html5 experiment (all html and javascript), which uses the geo-location features in modern browsers to look up your location in OCLC's mapFAST webservice and display the library subject headings that are relevant for your current location. If you click on one of the subjects you'll be taken to a list of titles in WorldCat on that topic.
License: Public Domain
Author: Ed Summers <ehs@pobox.com>