In the best of times responding to a job listing can feel like sending your resume out to sea in a bottle. But at least you received a call or an email acknowledgement. Now, with the volume of applicants higher than ever, you're more likely to hear nothing.

If there is a resounding silence from your queries, keep looking and networking. But you can also do some sleuthing to give you a better chance of standing out next time. Recruiters and career experts agree that, if you didn't get an interview or phone call -- or even a thank-you email -- it may be due to at least one of six reasons.

1. They're just not that into you.

You're good, but someone else more closely met the qualifications. In a tight job market employers can usually get exactly the type of candidate they want. A polite "thanks, but no thanks" letter or email would be nice. But don't expect it these days.

2. They may be into you, as soon as they get to you.

Companies receive so many submissions these days that they don't even have time to send out letters or confirmation emails. "I know a major software company that's taking more than three weeks just to send out acknowledgement notes, and some companies are spending months sifting through resumes for just one opening," workplace etiquette expert Sue Fox tells Yahoo! Hot Jobs.

Visiting a job fair may significantly increase your chances to get a job even faster than you might have thought. You just need to be prepared to “hit” the potential employers. This article will give you some useful tips on how to be a success at a job fair.

Resume.

Review and update it, making sure that the contents reflect the kind of job you are currently looking for. Even if your previous working experience is not too much relevant to it, adjust your resume to your needs – stress out the points that could give you an advantage in job hunting in the desired field. Make many copies of the resume so that you can take a bunch of them to the job fair – you are going to meet quite a lot of prospective employers there.

Introduction.

Think of a brief presentation, that you could use to introduce yourself. It should be like a 40-60 seconds’ commercial, outlining the main points and aimed at making a good impression. A fresh, bright, upbeat presentation will help you grab the recruiter’s attention and get them interested in employing you.