If you would like to post an image of your timeslip for the NASIOC Timeslip Registry and don't have a place to host it, just reply to this thread using the 'Attach file:' feature at the bottom of reply to upload your attachment. Your file just needs to be less than 50Kb, which is pretty big for a scan of a timeslip.
To get the link, just right-click on the uploaded attachment and chose properties to get the URL to paste into the 'Link to Timeslip' field. Make sure you include the http://
part of the link.