Little script in node.js which uses the facebook API to rank users within a group by number of recent posts. This has been done within HelsinkiJS #Peerprogramming

rank.js

// Give the script a facebook token and a group id
var APIKEY = "";
var GROUP = "";

var https = require('https');

https.get({hostname:'graph.facebook.com', path:'/' + GROUP + '/feed?access_token=' + APIKEY, agent:false}, function (res) {
   var chunks = [];
    res.on('data', function (chunk) {
      chunks.push(chunk.toString());
    });
    res.on('end', function() {
        json = JSON.parse(chunks.join(""));
       rankUsers(json);
    });
});

var rankUsers = function(json) {
    
    var postCount = {};
    
    json.data.forEach(function(post) {
        
        if(postCount[post.from.name] ) {
            postCount[post.from.name]++;
        } else {
            postCount[post.from.name] = 1;
        }
    });
    
    var postCountArr = []
    
    for(var key in postCount) {
        postCountArr.push([key, postCount[key]]);
    }
    
    postCountArr.sort(function(a,b) {return a[1] < b[1];});
    
    for(var i = 0; i<postCountArr.length; i++) {
        console.log((i+1) + "." + postCountArr[i][0]);
    }
};