One of the main things I loved about backing the Shenmue kickstarter was the chance to write a message that will be incorporated into the Choubu inn guestbook. Just the idea of having a direct input into the game still makes me very happy.
However, I'm in doubt as to what angle to come at it from. Personally I'd want it to be consistent with the game world and not a comment referencing the real world/kickstarter/15 year wait etc, or even the game as a game. On the other hand in 1987 I still wouldn't have been born for another few years, which makes it difficult (in my head) for the comment to be both personal to me and a part of the realism of Shenmue. I may just end up leaving an anonymous review about the comfortable beds and relaxing atmosphere.
Has anyone else thought about how they will write their comment? Would it bother you if the comments were immersion breaking?