Bookjobs.com Not a lot of activity here, but might be good for career changers.
CareerBuilder.com One of the biggest job boards of all times. We should know, newspaper companies built it.
Careerjet.com This search engine finds jobs across multiple sites.
Dice.com While this site favors the technically proficient, it can be a good source for technical writers, artists and designers.
Green Jobs This site offers a handful of jobs favoring sustainability.
Higher Education Careers This is one of the best sources for careers in higher education. Listings sometimes overlap with Chronicle of Philanthropy.
Indeed Create custom search agents across multiple job sites.
Jobing.com Local job search site. Need to hit "change location" if you want to search different localities.
JournalismJobs.com If you're still looking for a job in journalism, this is one of the best places to go.
Mediabistro Jobs If you want to stay in the writing/editing fields, MediaBistro offers plenty of jobs as long as you live in Los Angeles or New York.
Monster.com Another giant job board, but it has limitations.
Nielsen Media This site includes Editor & Publisher jobs, but has been anemic in recent months.
Philanthropy Careers This is one of the premier sources for anyone wanting to move into Philanthropy. Listings sometimes overlap with Chronicle of Higher Education.
Poynter Online Careers Postings have been slow here, but the jobs that do get posted are top notch.
Publishing Jobs There are some interesting jobs posted here, but you need to register. (Note: I have not tested out this site.)
SimplyHired Contains postings from multiple job boards.
Society for News Design Job Board The Society for News Design has long maintained a list of jobs available to page designers and artists.
StateJobs.com If you select editor/writer on search, some interesting positions show up.
The Ladders Executive job search that charges a premium. All posted positions pay $100,000+.