TwitterMostFollowed

gistfile1.js

#!/usr/bin/env node
var request = require('request');
var async = require('async');
var db = require('dirty')('followers.db');

var oauth = {
    consumer_key: '',
    consumer_secret: '',
    token: '',
    token_secret: ''
};


db.on('load', function () { 
    var getFollows = function (userid, callback) {
    
        var stored = db.get(userid);
        
        if (!!stored) {
            
            callback(stored);   
                    
        } else {
            request({
                url:'https://api.twitter.com/1/friends/ids.json?user_id='+userid+'&cursor=-1',
                method:'GET',
                json:true,
                //oauth:oauth
            }, function (error, response, body) {
                
                if (!!body.ids) db.set(userid, body);
                else console.log(body);
                
                callback(body);
            });
        }
    
    };

    var followersCollection = {};
    var stack = 0, idcount = 0;
    getFollows(23116122 /* ChiperSoft */, function (body) {
        async.forEach(
            body.ids,
            function loop (id, callback) {
                getFollows(id, function (body) {
                    if (!!body.ids) {
                        body.ids.forEach(function (id) {
                            stack++;
                            if (!!followersCollection[id]) followersCollection[id]++;
                            else {
                                idcount++;
                                followersCollection[id] = 1;
                            }
                        });
                    }
                    callback();
                });
            },
            function done (err) {
                var results = [];
                for (var key in followersCollection) {
                    if (followersCollection.hasOwnProperty(key)) {
                        if (followersCollection[key] > 2) {
                            results.push({
                                id:key,
                                count:followersCollection[key]
                            });
                        }
                    }
                }
                results.sort(function (a,b) {
                    return b.count - a.count;
                });
                results = results.slice(0,99);
                
                var ids = results.map(function (o) {
                    return o.id;
                });
                results = [];
                request({
                    url:'http://api.twitter.com/1/users/lookup.json?user_id='+ids.join(','),
                    method:'GET',
                    json:true,
                    //oauth:oauth
                }, function (error, response, body) {
                    
                    body.forEach(function (profile) {
                        results.push({
                            screenname:profile.screen_name,
                            name:profile.name,
                            count:followersCollection[profile.id],
                            followers: profile.followers_count
                        });
                    });

                    results.sort(function (a,b) {
                        return b.count - a.count;
                    });

                    console.log(results);
                });
                
            }
        );
    });
    
});

Needs to have the request, async and dirty libraries installed via npm.

Change the userid on line 42 to your own. It helps a lot if you fill in the oauth object details and uncomment lines 28 and 85, as that increases the twitter request cap from 150 to 350 requests.