Leave a list of fictional characters in your journal that you would love to get a message from. It is your friend-list's mission, should they choose to accept it, to write you an in-character "letter" from a character on that list. Then they post their own list in their journal and the process continues!
1. Kamio Akira (Prince of Tennis)
2. Kaidoh Kaoru (Prince of Tennis)
3. Inui Sadaharu (Prince of Tennis)
4. Sakano (Gravitation)
5. James (Pokemon)
6. The Kittens Strapped to Inui's Chest (Prince of Tennis dj)
7. Mizuki Hajime (Prince of Tennis)
8. The King of the Universe (Katamari Damacy)
9. Atobe Keigo (Prince of Tennis)
10. Kabaji Munehiro (Prince of Tennis)
11. Izumi Sakashita (Love Mode)
12. Christopher (Petshop of Horrors)
13. Luffy (One Piece)
14. Wheezing (Pokemon)
15. Tuxedo Mask (Sailor Moon)