Deadly Mistakes.
A single advertised position might bring a few hundred to a few thousand responses, so even when filtered digitally, a recruiter has to review a large stack. This means that she first wants to "screen out" as many resumes as possible so that she has more time to analyze the 10-20% that remain.
If you were qualified for the position, how would you feel if your resume hit the reject pile because of a misspelling, or because the organization was sloppy or inconsistent?

According to recent information from The Robert Half Organization a high number of otherwise competent candidates get rejected simply because he or she has published their resume with avoidable mistakes.

A few of the most obvious mistakes: grammatical errors, knowing little about the company, their business, or the kind of people they hire, taking four pages to communicate two pages of information, complaining about earlier employers.

Action: Have your resume "double edited" before releasing it, by 1/ someone in your field and 2/ by someone who has a good eye for writing errors.