Things I find TERRIBLY annoying while job-hunting:
1. Cumbersome and lengthy application programs, especially those that seem incapable of properly storing data (NISD and NEISD websites, I'm talking to you).
2. Sites with application managers that require you to rebuild, by hand, your entire resume so they can store it in their database of dubious quality (see above note).
3. Bogus job offers. I sincerely hope I someday have the opportunity to get my hands on even one of these duplicitous, data-mining scumbags. I promise you the results will be picturesque.