If you think submitting a resume and cover letter is enough effort on your part to bag a job, then you are mistaken.
80 percent of prospective employers google you before inviting you for an interview and if they don't find anything 'note-worthy', chances are they won't be dialing your number, the Huffington Post reported.
What you can do to increase your so-called activity on Google is: first of all googling your name and then google someone well-known and well-respected in your field.
You will notice that his or her profile is available for free online on sites like Facebook, LinkedIn, Twitter, Google+, VisualCV etc.
So, increase your online visibility by setting up your account on such public-friendly sites and maintain them for increasing your chances of getting called or job interviews.