404. That’s an error.
The requested URL /add?feedurl=http%3A%2F%2Fufoplanet%2Eufoforum%2Eit%2Fheadlines%2Farticoli%5Flista%5Fpublic%5Fxml%2Easp?PAGE%5FNUM%3D4%26HL%5FCATEGORIA%5FID%3D42%26RSS%5FDISP%3D7
was not found on this server. That’s all we know.