using System;

using System.Collections.Generic;

using System.Configuration;

using System.Linq;

using System.Net;

public class Program

{

    public static void Main()

    {

        List<string> ignoreTagList = new List<string>() { "ensemble", "readyforweb" };

        var tags = "ensemble, featured, readyforweb";

        if (tags == null) return;

        // convert to list

        var tagList = new List<string>(tags.Split(','));

        var result = new List<string>();

        foreach (var tag in tagList)

        {

            var currTag = tag.Trim();

            Console.WriteLine("currTag = "+currTag);

            if (ignoreTagList.Contains(currTag.ToLower())) continue;

            Console.WriteLine("  -- adding");

            result.Add(currTag);

        }

        // convert back to comma-separated list

        var resultStr = string.Join(", ", result);

        Console.WriteLine("result = "+resultStr);

    }

}