It's a pity that there's no undo action for Imgur postings -- so I wonder how hard it would be to show a deletehash link (  imgur.com/delete/{deletehash}  ) after a successful image upload?

As with the id value, it shall come inside <deletehash> tags: "<deletehash>15 symbols here</deletehash>", so I think it can be found by adding one more check at the end of this scan in lib/screenshooter-imgur.c::imgur_upload_job():
===
  /* returned XML is like <data type="array" success="1" status="200"><id>xxxxxx</id> */

...

  root_node = xmlDocGetRootElement(doc);
  for (child_node = root_node->children; child_node; child_node = child_node->next)
    if (xmlStrEqual(child_node->name, (const xmlChar *) "id"))
       online_file_name = xmlNodeGetContent(child_node);
  TRACE("found picture id %s\n", online_file_name);
===

I'm not sure what would be the best way to display the link, but may be just adding an extra output field next to "BBCode for forum" will do?
Anyway, thank you for the app -- it is next to perfect!