It's often better to have employers seek you outfor their specific needs than to send your resume willy-nilly to dozens or even hundreds of employers. But note that in her USA Today article, Armour cites a number of complaints that employers raise about the online resumes they receive directly. Make sure you send your online resume in response to specific openings only, and be sure you are qualified to fill those openings. Jobseekers often send resumes in the form of e-mail attachments, which can present major problems when opened by the recipient's computer. Don't send your resume as an attachment unless an employer's Website or want ad specifically requests an attachment.
Employers grouse that e-mailed resumes are often poorly formatted.
Read the guidelines for scannable resumes at this site. Another way to avoid the formatting dilemma is to publish your resume attractively on a Web page and simply direct the employer to your Web resume. Employers bemoan the fact that they can't tell what job you're applying for and that the e-mailed resume is so impersonal. This is where the cover letter comes in. A resume should always be accompanied by a cover letter, and many online-resume senders forget that principle.