When you're creating profiles on social networking sites like LinkedIn, Twitter and Google+, it's important to add a photo to your profiles. If I'm making a decision on whether to connect with someone, I always hesitate if there's no photo.
Adding a photo will enhance your professional image and will let those networking connections who you don't get to meet in person connect a face to a name.
When you're using sites for professional and career networking, nobody wants to see a blank avatar where your photo should be. And your picture should be a photo, not a cartoon, a random graphic you happen to like, or a cute image of your kids or dogs or anything else. Your photo should be a headshot and should be appropriate for professional connections to view.
It's also a good idea to be consistent across all your online profiles, if you use the same themes and photos you will be able to create a strong personal - and professional - brand.
Image Copyright LinkedIn