The problem with that question is you will get different answers depending on who you ask. Everyone who are serious online business owners, know the importance of being a list builder. For them the question isn't when to build your list, but how to build a responsive list. Then you have the question of your opt in list, should it be a single or double opt in? Have you considered using the double opt in list builder? This is something you can be using with your downline builder. Imagine the difference it would make to your mailing list. Can you imagine what you email marketing strategy would be like if you knew that you would have a double-opt-in viral list? Imagine what it would be like if your list just grew and grew. For more details www.confessions-followup-marketing.com You would be learning how to build your list, and keep on building your list to a size that you have only dreamt of. Gone will be the days where you are excited because one person has joined your site, but you will be seeing hundreds added as your run a viral network. You have just discovered one of the hidden secrets for viral marketing. Yes, you read that correctly. You see most people think small, they think that at some stage their list will grow into four figures, and by then they will have such a great relationship that people will buy. The problem with that thinking is the time it takes to do the building. Imagine what it would be like if your list grew to that size in a short time. You might be wondering how that could happen, but word of mouth is a brilliant sales strategy. You will always trust your friends' recommendation over someone you have never met. Think about it for a moment, you want to buy something for your home. You have checked and basically you can't see what is different in the products. The salesmen might be pushing a product for more commission, but your friend tells you why their choice is the best, based on their experience. Yes, you will buy your friend's recommendation. The same is true online. You recommend to a friend, and explain that they need to join your list. Suddenly word of mouth has given you a viral explosion. For more details www.craigs-list-profits.com This is something most people on dream about, but by using your downline builder you will see this becoming a reality. It is simple to do, and you will be able to email your offers to your list many times a week. The more you build your list, the more you will use your email marketing strategy, and the more you will see the money coming directly into your bank account. The longer you leave building your list, the more money you will be leaving on the table as you have no list to build a relationship with and then make great offers to.