I want to send letters/mails to show support to upcoming new series I'm gonna buy - Loki, Ms. Marvel, Ghost Rider, New Warriors. And one letter explaining why I won't buy certain upcoming series, even through I love characters in it (long story short: i don't like the writer and direction). But I don't know where to send them and how to make them reach people responsible for each specific series. Could you give me some help or point to place where I can find it?