New Post: Filtered Stream if he/she follow and i follow him/her

var followerIds = new HashSet<long>(User.GetFollowerIds("me"));
var us = Stream.CreateUserStream();
us.TweetCreatedByAnyoneButMe += (sender, args) =>
{
    var tweet = args.Tweet;
    var creator = tweet.Creator;
    var creatorId = creator.Id;

    if (followerIds.Contains(creatorId))
    {
        // My code
    }
};

us.FollowedByUser += (sender, args) =>
{
    Console.WriteLine("Mr {0} is now following you!", args.User.ScreenName);
};
us.StartStream();