Exactly how does Verizon figure usage on MiFi JetPack? What counts against the 5 gig limit? Does opening and reading email count? Does browsing sites for information count? I do genealogy research and need to know if I am searching index lists, does that count against my usage limit even if I am not downloading my results? I understand downloading email attachments counts but reading emails? Another question: On my MiFi there are messages from Verizon and I don't know how to clear them off. I have tried everything. I have read all 14 messages and the menu still tells me I have 6 unread ones and I can't get rid of any.