Freemium has its own problem: you have to be careful that your free service is not perceived as "neutered", while still leaving a reason for users to pay you fo

Freemium has its own problem: you have to be careful that your free service is not perceived as "neutered", while still leaving a reason for users to pay you for the premium service. (Expect to see at least two blog posts on HN in the next two days on this topic.)