As I stated before, it would be more RP-like and realistic to use messages with messengers, instead of chatting out of the game. That\'s like telepathy. We as humans do not have such a skill.
Stories in books, arcane knowledge in books, encyclopedias, dictionaries, military manuals, other manuals (cooking)... So many types of books out there to use. Not to mention spy information on guilds. But why not post these things out of the game? It would be more convenient. Unless the character is somehow benefited by it, but that may or may not happen.