FP Subforums v2

using System;
using System.Diagnostics;
using System.Net;
using System.Threading.Tasks;

class Program
{
    static void Main()
    {
        Console.Write("Username: ");
        string username = Console.ReadLine();
        Console.Write("Password: ");
        string password = Console.ReadLine();

        int[] subforums = {
            6, 15, 16, 36, 38, 40, 46, 51, 56, 60, 62, 64, 65, 66, 75, 76, 107,
            110, 189, 198, 240, 243, 262, 277, 315, 316, 339, 353, 361, 383,
            384, 385, 389, 391, 393, 394, 396, 397, 401, 403, 408, 409, 411,
            412, 414, 415 };

        ServicePointManager.DefaultConnectionLimit = 10;
        var client = new Client();
        var time = new Stopwatch();
        time.Start();

        client.UploadString(
            "http://www.facepunch.com/login.php?do=login",
                "vb_login_username=" + username +
                "&vb_login_password_hint=Password" +
                "&vb_login_password=" + password +
                "&s=" +
                "&cookieuser=1" +
                "&securitytoken=guest" +
                "&do=login" +
                "&vb_login_md5password=" +
                "&vb_login_md5password_utf=");

        Parallel.ForEach(subforums, subforum =>
            new Client(client.Cookies).DownloadString(new Uri(
                "http://www.facepunch.com/forumdisplay.php?f=" + subforum)));

        time.Stop();
        Console.WriteLine("\nRequest completed in {0} seconds.",
            ((float)time.ElapsedMilliseconds / 1000).ToString("F3"));
        Console.Write("Press any key to continue . . . ");
        Console.ReadKey();
    }
}

public class Client : WebClient
{
    public CookieContainer Cookies { get; private set; }
    public Client(CookieContainer cookies = null)
    {
        Cookies = (cookies != null) ? cookies : new CookieContainer();
        Headers.Add("Content-Type", "application/x-www-form-urlencoded");
    }

    protected override WebRequest GetWebRequest(Uri address)
    {
        WebRequest request = base.GetWebRequest(address);
        HttpWebRequest webRequest = request as HttpWebRequest;
        if (webRequest != null) webRequest.CookieContainer = Cookies;
        return request;
    }
}