Not everyone who graduates with an MLIS intends to follow a traditional librarian career path (is there such a thing these days?) A number of sites that discuss possible divergent careers are listed below, but also see New Career Directions.
Seminar in Information ScienceTopic: New and Alternative Careers For Librarians and Information Professionals (syllabus addressing this issue at San Jose State University).
Librarians in the Information Age: Alternative Uses of MLS Degrees from LISJobs.com.
This is a career development site that has a wide range of resources and advice for library and information professionals as well as students.