If you comment a lot on blogs, and would love to have your picture displayed as an avatar on your comments, here is how to do it. This tutorial applies to WordPress.com blogs and self-hosted WordPress blogs.
1. Browse to Gravatar.com and create an account. Be sure to use the same email address that you want to use when you submit your comments
2. Login to your Gravatar account and upload the picture of your choice
3. Attach the uploaded picture to your email account in Gravatar. Gravatar supports multiple email accounts and multiple images, so you can attach different pictures to different email accounts.
That is it. When next you submit a comment on a WordPress.com blog e.g. lagbaja.wordpress.com, or a self-hosted WordPress blog, e.g. MOBILITY.com.ng, your selected picture is automatically displayed on your comment.