Use Twitter directly in your Google Doc, so no one will ever blame you for being social

Tweetsheets

function authorize_(method) {
  var oauthConfig = UrlFetchApp.addOAuthService("twitter"); 
  oauthConfig.setAccessTokenUrl("https://api.twitter.com/oauth/access_token");
  oauthConfig.setRequestTokenUrl("https://api.twitter.com/oauth/request_token");
  oauthConfig.setAuthorizationUrl("https://api.twitter.com/oauth/authorize");
  oauthConfig.setConsumerKey(UserProperties.getProperty("CONSUMER_KEY"));
  oauthConfig.setConsumerSecret(UserProperties.getProperty("CONSUMER_SECRET"));
  
  return {
    oAuthServiceName: "twitter",
    oAuthUseToken: "always",
    method: (method) ? method : "POST",
  };
}

function onInstall() {
  // Set Twitter API keys
  var cKey = Browser.inputBox("Twitter API Access", "Enter Consumer Key:", Browser.Buttons.OK);
  var cSecret = Browser.inputBox("Twitter API Access", "Enter Consumer Secret:", Browser.Buttons.OK);
  if(!cKey || !cSecret) return false;
  UserProperties.setProperty("CONSUMER_KEY", cKey);
  UserProperties.setProperty("CONSUMER_SECRET", cSecret);
  
  // Install triggers
  var triggers = ScriptApp.getScriptTriggers();
  for(i in triggers) ScriptApp.deleteTrigger(triggers[i]);
  ScriptApp.newTrigger("refreshTimeline").timeBased().everyMinutes(1).create();
  ScriptApp.newTrigger("processCommand").forSpreadsheet(SpreadsheetApp.getActiveSpreadsheet()).onEdit().create();
  
  // Creat header row
  SpreadsheetApp.getActiveSheet().setFrozenRows(1);
  SpreadsheetApp.flush();
  SpreadsheetApp.getActiveSheet().getRange(1, 1, 1, 3).setValues([["User", "Status","Action"]]).setFontWeight("bold");
  Browser.msgBox("Please run refreshTimeline function from Script Editor to authorize access to Twitter API.");
}

function onOpen() {
  var sheet = SpreadsheetApp.getActiveSpreadsheet();
  sheet.addMenu("Tweetsheet", [
    { name : "Tweet", functionName : "sendTweetDialog" },
    { name: "Refresh timeline", functionName: "refreshTimeline" }
  ]);
};

function refreshTimeline() {
  var count = 25;
  try { 
    var result = UrlFetchApp.fetch("https://api.twitter.com/1/statuses/home_timeline.json?count="+count+"&include_my_retweet=1", authorize_("GET"));
    var tweets = Utilities.jsonParse(result.getContentText());
    var sheet = SpreadsheetApp.getActiveSpreadsheet();
    var fRows = sheet.getFrozenRows();

    for (var i=0; i<tweets.length; i++) {
      var rowIndex = i+fRows+1;
      sheet.getRange("A" + (rowIndex)).setValue("@" + tweets[i].user.screen_name);
      sheet.getRange("B" + (rowIndex)).setValue(tweets[i].text).clearFormat();
      sheet.getRange("C" + (rowIndex)).clearContent();
      sheet.getRange("D" + (rowIndex)).setFontColor("white").setValue(String(tweets[i].id_str));
      
      if (Boolean(tweets[i].favorited)) {
        sheet.getRange("B" + (rowIndex)).setBackgroundColor("yellow");
        SpreadsheetApp.flush();
      }
      
      if (tweets[i].current_user_retweet) {
        sheet.getRange("B" + (rowIndex)).setFontWeight("bold");
      }
    }
  }
  catch(err) {
    Logger.log(err); 
  }
}

function processCommand(e) {
  var command = e.value.toLowerCase();
  if (e.range.getColumnIndex() == 3 && command != "") {
    var rowId = e.range.getRowIndex();
    var authorId = SpreadsheetApp.getActiveSheet().getRange("A"+rowId).getValue().toString();
    var tweetId = SpreadsheetApp.getActiveSheet().getRange("D"+rowId).getValue().toString();

    switch(command) {
      case "<3":
        fave_(tweetId);
        break;
      case "rt":
        retweet_(tweetId);
        break;
      case "reply":
        sendTweetDialog(tweetId, authorId);
        break;
    }
  }
}

function fave_(e) {
  if(e) {
    try {
      UrlFetchApp.fetch("https://api.twitter.com/1/favorites/create/" + e + ".json", authorize_());
      SpreadsheetApp.getActive().toast("Added to favorites!");
    } catch (err) {
      Logger.log(err);
      var message = Utilities.jsonParse(String(err).substr(String(err).indexOf("{")));
      SpreadsheetApp.getActive().toast(message.error);
    }
  }
}

function retweet_(e) {
  if(e) {  
    try {
      UrlFetchApp.fetch("https://api.twitter.com/1/statuses/retweet/" + e + ".json", authorize_());
      SpreadsheetApp.getActive().toast("Retweeted!");
    } catch (err) {
      Logger.log(err);
      var message = Utilities.jsonParse(String(err).substr(String(err).indexOf("{")));
      SpreadsheetApp.getActive().toast(message.errors);
    }
  }
}

function sendTweet_(tweet, tweetId) {
  if(tweet) {
    var requestData = authorize_();
    requestData.payload = {status: tweet};
    
    if (tweetId) requestData.payload.in_reply_to_status_id = tweetId;
    
    try {
      UrlFetchApp.fetch("https://api.twitter.com/1/statuses/update.json", requestData);
      SpreadsheetApp.getActive().toast("Tweet sent!");
    } catch (err) {
      Logger.log(err);
    }
  }
}

function sendTweetDialog(tweetId, authorId) {
  var input = Browser.inputBox("Compose new Tweet", "What's happening?", Browser.Buttons.OK_CANCEL);
  if(authorId) input = authorId+" "+input;
  if(input && input!="cancel") sendTweet_(input, tweetId);
}