Profile photos are an important part of creating trust between yourself and other users on site. By uploading a profile photo of yourself, you are putting a face to your name and showing others that you are invested in your search. Uploading a profile photo means that you are taking the time to add more personality to your listing, and as such, may see better results.
If you have a business photo or photo you use throughout your social media accounts, feel free to use that as a way to advertise your services.
For tips on choosing a profile photo, see How do I choose a profile photo?
Note: Remember, photos must not display personal contact information as this will cause your profile to be flagged.