I noticed in the post before mine, someone was wondering how to get a letter to him, and although I can't do that myself, there is talk of creating a fanbook for Nikko on www.idolforums.com and delivering it to his dad's sports bar for him. I think that anyone who is interested in sending something to him, has the best chance by doing this.
Also I just wanted to let you all know that I'm the moderator/owner of Nikko's Official Fanlisting and it would be really cool if you could join and show how much you support him. I'm not sure if he's seen the site or not but it's been around since the begining and we've over 100 members! It is listed on search engines when you search for his name, so hopefully he'll have a chance to see it now that he's going to see how important he is to many of us!
If anyone is up for a chat, hit me up on AIM at rockerannah8706 or MSN at email@example.com. I hope to hear from ya'll soon!
Lots of Love,