(1) Philosophy job ads with an emphasis on jobs in the US
PhilJobs (both UK and US emphasis)
The Chronicle of Higher Education Jobs Database
Phylo Job Forum
Association of Graduate Schools in Catholic Colleges and Universities Jobs Database

(2) Philosophy job ads with an emphasis on jobs outside the US
http://groups.google.com/group/fa.philos-l/topics?gvc=2
http://listserv.liv.ac.uk/archives/philos-l.html
http://www.jobsinphilosophy.org/
http://www.mindcogsci.net/?cat=32

Emphasis on postdoctoral and early career fellowships
(a) UK: http://www.bristol.ac.uk/arts/research/external/
(b) Australia: http://aap.org.au/jobs/postdocs.html