Just use your own name. There is no functional difference.<p>There is another Joel McCracken somewhere, a principal  of some school somewhere. However, my full name, "Joel Nathan McCracken", has not been taken. I've been thinking about beginning to use it in various places.<p>edit: one issue with this approach (or any similar approach, for that matter) is that it isn't easy to find the spot on the page where your name appears. A user would have to cmd+f your tag to figure out what you said, if they are interested. A better approach might be adding a link to the tag, but there are problems with that too -- places don't/shouldn't allow html content in their comments.<p>In any case, its a good issue to bring up.