A quick tip for getting traffic to your opt in site or blog is to post in forums. First of all Join the forum in your niche. Join again with a Pseuedo Name. Sign in as the pseuedo name. Post a question related to what you sell. REsign in as the real you and have a conversation. Don't Sell. After five posts put a back link to your site. now your seen as the expert. People will want to check you out.