Once you have a decent list of suscribers and customers you can opt for all the analytics tools on aweber or just use another service that can segment with actions. This is actually the key to maximize profits with your existing email list, you don’t need to get traffic (but i recommend you to always do that) and this will work.
A post on aweber blog remembered me of how important is to segment your list to create loyalty and raving fans that spend more when you talk directly to them.
When you talk directly to them they feel special and have belonging with your brand and enterprise. When people spend more in your business they will have more sucess so help them do that with segmenting your high paying customers and your customers that are on the fence on the introduction to your products or services.