Alright guys, I have a social bookmarking website which has currently 102k+ members and on other hand I have 150k+ members in my article directory. All emails are double opt in, means they are verified. I am thinking to do a email blast, around 70% emails are from USA. I have a VPS server from hostgator which allows unlimited email sending. But I am not gonna send all of them at once may be around 3-4k per day. But should I do CPA or should I sell products? Should I hire a designer and create a landing page with my own product? I dont want to put advertisement on my websites because they looks ugly. Please can someone suggest me, how can I monetize it? Because at least I want to earn the expenses they are costing me. Thanks in advance..