Templates - Changing your name
Want to change your name, now that you've realized that Blogger posts the full name you gave when you signed up? Here's how. Click the "Team" button on the top toolbar, then click your name, then click "Edit My Profile" over in the upper right corner.
There are two approaches to naming yourself: if you want to change the name that appears in your blog, but you don't mind using your full name in Blogger Discuss, just put the name you want to use in your blog in the "Nickname" field, click "save profile", then edit your template by clicking "Template" on the top toolbar. Look for the byline (down toward the bottom: in most templates it starts out <span class="byline">) and change <$BlogItemAuthor$> to <$BlogItemAuthorNickname$>. Click "save changes" and then "publish". Check your main page to be sure it worked, and then republish your archives to make the change there by clicking the "Archive" button on the top toolbar, then clicking "republish all".
If you want total anonymity, change the "First Name" and "Last Name" fields (you have to put something in both, but "Last Name" can just be a single space if you only want one word), click "save profile", republish your blog and your archives, and then sign out of Blogger and close your browser to get Discuss to notice your new name.