I already have 3 sites that I made a while ago never around any keywords or anything just making my own community for topics that interest me. I made forums and blogs for each domain. One of the sites I worked on coding etc for months, it's actually a really well built site. I then made one blog based on a keyword I want to rank for. How many site should I start with to make money on Adsense? And what should I do with the 3 sites I already worked hard on? Thanks.