As others have said, it depends on the country. For my US clients I never add a photo, but I will offer to add a LinkedIn URL at the top. The ability for the re

As others have said, it depends on the country. For my US clients I never add a photo, but I will offer to add a LinkedIn URL at the top. The ability for the reader to view your profile (and photo) can help them to understand that this is a real person, and my guess is it's harder for most people to say 'no' to someone they have seen (of course this is assuming several things about each party).