Hi, I thought I had both of these working at one point, but now the icons have disappeared from the login screen. I read "Problems with Twitter and LinkedIn" post but could not relate the answer to what I had done.
For LinkedIn I followed the instructions precisely (I think) and I thought it was working yesterday.
For Facebook, I followed the instructions but it forced me to submit the app for approval. It displayed briefly on the login page but then disappeared.
Website is http://www.travelnasia.com