37. The system of claim 23 , wherein determining that the user belongs to the first population group comprises determining, using the server device, self-identification data associated with the user.
37. The system of claim 23 , wherein determining that the user belongs to the first population group comprises determining, using the server device, self-identification data associated with the user. 38. The system of claim 37 , wherein the self-identification data is selected from at least one of the following: user registration data, user preference data, and user selected data.