Forum Moderators: phranque
However, since you say this page has no backlinks, then it probably has no 'ranking power' to pass to the new URL. Therefore, it makes no difference to the search engines whether you redirect this URL or delete the file that corresponds to it and return a 410-Gone or 404-Not Found response when it is requested.
You can therefore base your decision entirely on 'user experience' factors. This would tend to favor the 410-Gone response, assuming that your custom 410 error page does a good job of explaining the error to your visitors and guiding them to find the resources they need.
Jim
[edited by: jdMorgan at 6:27 pm (utc) on June 9, 2009]