I am trying to get this work with scoopit.
Unfortunetly I was unable to get it done.
I have set the following variables:
$client->scope = 'http://www.scoop.it/oauth/request';
$client->dialog_url = "http://www.scoop.it/oauth/request";
$client->request_token_url = "http://www.scoop.it/oauth/request";
$client->access_token_url = "http://www.scoop.it/oauth/access";
$client->authorization_header = 0;
$client->client_id = Consumer Key;
$client->client_secret = Consumer Secret;