Due to the unemployment rate more and more job seekers are desperately trying to interest hiring managers and get a job offer. That is not a surprise that there are tons of resumes waiting to be seen, hundreds of candidates to be interviewed and an ocean of rejection letters.
Job applicants already know about the importance of resume as they enhanced awareness of professionally composed document. As a result, they submit and send valid and standardized resumes. Some job openings do require resume only, but if a candidate is looking for more success, he needs a custom cover letter.