Initially, when you comment or reply to a comment, a generic silhouette may be associated with your text. To change the image from a generic silhouette to an image that reflects who you are, please implement the following five steps.
Note: the following steps may not work unless you have a WordPress account.
Step 1: Go to the Gravitar website http://en.gravatar.com/
Step 2: Click the “Sign in” link in the upper right corner.
Step 3: Create a new account if you do not already have a Gravitar account.
Step 4: Enter information in the three required fields (labeled A, B, and C) then click the [Sign up –>] button (labeled D).
Step 5: Check your email account (inbox and if necessary the junk box) for an email from Gravitar, click the link in the email, and then follow the instructions to attach a picture to your email address.