I note that many of you who (like me) choose not to post your faces in your photos drop a little blank square over the face portion of your photos instead of cutting yourself off at the neck. How do you do this? Are you doing it from the site where you post your photos, or with software on your own computer before you upload the photo?

My 12-year-old son is my photographer and he heartily disapproves of the fact that I choose not to include my face. It would help if I let him photograph everything and then just blanked out my face. TIA!