[DNSB]

Perhaps you could emulate what several other people have done. Do not tell the poster what to do without showing an example of what can be done. In this case, one solution is to wrap the image link in URL tags which is not preferred since as you mentioned, this often leads to a 404 error or running into sites that no longer allow 3rd party access. The preferred option is to attach the image using the paperclip or Manage Attachments tool from Advanced mode.