Not like I have a job yet but I sure am looking hard for one!
I thought I would share some of the sites I have been using to hunt of openings. An important note: I am looking primarily for public library jobs in the Midwest (Michigan, Wisconsin, Minnesota, Iowa, Illinois, and Indiana) so there may be sources for other states that I am not aware of.
General job postings (these sites post all types of jobs for all places):
-ALA Job list (better for academic jobs but still worth a look): http://joblist.ala.org/
-LIS Jobs (not updated as frequently as ALA but they have some different jobs): http://lisjobs.com/jobseekers/job-ads.asp
-LibGig (consistent postings and a nice variety of jobs): http://publicboard.libgig.com/
-Society for scholarly publishing (nice if you are looking to get into acquisitions and collection building at a publisher. Something different!): http://www.jobtarget.com/home/home.cfm?site_id=9110
State specific job postings:
-I Need A Library Job (check out the Job pages in the menu at the top for lists of state specific resources): http://inalj.com/?p=1441
-Wisc Jobs (Wisconsin): https://wisc.jobs/public/index.asp
-RAILS (Illinois): http://www.railslibraries.info/jobs
-SLIS (Indiana): http://www.slis.indiana.edu/careers/view_job_titles.php
-Joblist (Iowa): http://www.statelibraryofiowa.org/ld/i-j/joblist/joblist
-Michigan jobline (Michigan): http://www.mla.lib.mi.us/jobline
-School specific listservs: Many library schools have their own job boards or email listservs. Take advantage of this!!!