Don't just hit up the big guys
Big-name websites like Monster and CareerBuilder are wonderful resources for online job hunting, but don't stop there. They charge fees that some smaller companies can't afford or don't believe in paying. Make sure to check out smaller job boards or job board aggregates such as indeed.com to find more online gigs.
Don't use your company's email to job-hunt
Even if your company says it's OK to use their email server to send out resumes, don't do it. You can get in trouble with your existing company, plus it won't look like a move in good taste to the prospective employer if you use your work email. Another setback: If you're contacted in the future and are no longer at your current job, you'll miss the message. Set up one email account with a professional handle (your name, for example) and stick to that.
Don't blast off your resume
Blast out your resume, but with some personal attention. Don't just fire it off into the Internet abyss. More importantly, a customized cover letter can go a long way to win over an employer, so be sure to take the time to customize one as best you can.
Consider your privacy
While you may not want to post your contact information, that's OK for many people who see it as a move from someone who is Internet-savvy. Be sure to check out the privacy settings when posting your resume and do what feels right for you--and for your future career.