anchor.diff:      Start ++ string:join([string:join(Key, Value, "=") || {Key, Value} <- Params], "&").
   
   build_composite_key(Consumer_secret, Access_token) ->
  -    string:join([Consumer_key, Consumer_secret], ":").
  +    string:join([Consumer_secret, Access_token], ":").
   
   build_oauth_signature(Base_info, Composite_key) ->
       base64:encode_to_string(crypto:hmac(sha1, Base_info, Composite_key)).
  
positive.code:         {oauth_nonce, erlang:timestamp()}, %FIXME: Should be unix time
          {oauth_signature_method, "HMAC-SHA1"},
          {oath_token, Access_token},
          {oath_timestamp, erlang_timestamp()},
          {oath_version, "1.0"}
      ].
  
  
negative.code:     [{oauth_signature, Oauth_signature} | Details].
  
  build_authorization_header(Oauth_details) ->
      "Authorization: OAuth " ++ string:join([lists:flatten(io_lib:format("~p=\"~p\"", [Key, Value])) || {Key, Value} <- Oauth_details], ", ").
  
  % http://stackoverflow.com/questions/12916539/simplest-php-example-for-retrieving-user-timeline-with-twitter-api-version-1-1
  