Using shallow focus, created by using a wide aperture, is a great way to bring clarity and emphasis to a photo. With your focus on your subject and the background blurred, you can remove distractions and bring clarity to your subject.
This type of focus in a photograph can allow a viewer to use their imagination to fill in the blanks about the blurred background details or be able to not have worry about anything other than the subject. Shallow focus can also allow you to be very specific with important details in your subject, especially in close up photographs.
Give it a try and share a link to your top 5 examples in the comments below.