When he wanted to change jobs last June, Jared Kreiner, a public relations account supervisor in New York, designed his own job-hunting site, www.jaredkreiner.com. Shortly afterward, a former colleague who was about to leave the public relations firm G. S. Schwartz & Company recommended Mr. Kreiner to her manager as a possibility to replace her — and mentioned his Web site. “I think my site helped me get the job,” Mr. Kreiner says. He removed his résumé when he started work, but reposted it when he was laid off last December because of cost cuts. He is now actively promoting the site. Mr. Kreiner includes his Web site’s URL in online applications and in cover letters, and uses Google Analytics to find out how many people have visited his site and downloaded his résumé. “I always get good feedback,” he said. “People I’ve interviewed with have said my site helped them decide whether or not to meet with me and that they forwarded the URL to their colleagues and every other person I would potentially be meeting with in the interview process.