404. That’s an error.
The requested URL /bookmarks/mark?op=edit&output=popup&bkmk=http%3A%2F%2Fthe-w.com%2Ftesting-profile-edits&title=testing+profile+edits was not found on this server. That’s all we know.
/bookmarks/mark?op=edit&output=popup&bkmk=http%3A%2F%2Fthe-w.com%2Ftesting-profile-edits&title=testing+profile+edits