We would like to see if there are any black holes or ability to gather data from about 15 different websites that are similar to ours. Basically we'd like to find out if we can gather the customers that visit their sites so that we have the opportunity to sell them our products and offer them samples of our healthy items.
The data we will be looking for is email addresses of new visitors and past visitors to sites and we can provide some example URL's.
If there are any black holes that would allow us more volume that would be great. We are also open to any other method at entry or exit to capture the email addresses of these visitors and customers.