For some reason this has generated a lot of gnashing of teeth the last few days, so I went straight to the source to get the correct information. Go to this link and fill out your information. Copy the text from the box under the preview of the button. Paste into notepad and replace {screen_name} with your twitter user name. Edit your SBN profile and paste from notepad into your signature field. Don't forget to save. HTH, HAND UPDATE: As noted below, if you're trying this and it doesn't appear to work, make sure you refresh the page (F5 key) so that the button will be generated.