Klout Score Grouper. Requires `request` nodejs module, and you have to edit the file to add your Klout API key and the twitter handles you want to query Klout for scores.

addScores.js

var request = require('request');

var api_key = "<KLOUT_API_KEY>";
var handles = ["user1", "user2"];

var twitter_url = "http://api.klout.com/v2/identity.json/twitter?screenName=";
var klout_url = "http://api.klout.com/v2/user.json/:klout_id/score?";
var user, sum = 0, idx = 0;

function addUpUser(){
  if (idx == handles.length) {
    console.log("Grouped Klout Score:",sum);
  } else {
    user = handles[idx];
    request.get({
      url: twitter_url+user+"&key="+api_key,
      json: true
    }, function(e,r,data){
      request.get({
        url: klout_url.replace(':klout_id',data.id)+"&key="+api_key,
        json: true
      }, function(e,r,klout){
        console.log("Added @"+user,":",klout.score);
        sum += klout.score;
        idx++;
        // This is not cool, but klout limits 10 calls per second, so let's be 
        // on the safe side...
        setTimeout(addUpUser, 1000);
      });
    });
  }
}

addUpUser();