I am trying to allow users to import their Hotmail contacts to my site to invite friends. I am looking to write a custom PHP solution, not something like http://openinviter.com/. I tried the Live API, but it only outputs email hashes.
Does anyone know how I can accomplish this? It was super easy to setup on Yahoo! and Gmail, but Hotmail has me floored. I need this to work on PHP 5.3.