Services_Digg_Common | --Services_Digg_Users
void getAll( [array $params = array()])
void getUserByName( string $username, [array $params = array()])
void getUsersByName( array $usernames, [array $params = array()])
void getUsersComments( array $usernames, [array $params = array()])
void getUsersDiggs( array $usernames, [array $params = array()])