A popular trend these days is to sign your images when posting online. The thought is to treat the image more like it was being shown in a gallery and less like pixel dust in the wind. The process is really pretty easy to do. I’d also like to state that this is a much more attractive way to watermark a photo.
Head over to Triple Exposure to see the free tutorial – http://3exposure.com/2011/08/03/how-to-sign-your-work-–-adding-a-digital-signature/