So, do you have some characters who have long distance friends/family/lovers/rivals/etc. that they'd like to keep in contact with, even though they're not in the same area (and perhaps not even in the same country)? Well, now they have a way to keep in contact and interact even over a long distance.
Here your characters can send letters (written or perhaps even magically constructed) to all those significant people in their life while they're travelling or otherwise apart for whatever reason. This also makes it easier on players who may wish to have their character explore a little and indulge in other plots while still making sure that all the friendships and relationships their character has developed stay strong and intact.
When posting a letter to a character, in the subject line of the post please include:
1. What character the letter is addressed to
2. And what character the letter is from
Example: To Luke, from Leia
Pardon the bad example.
Letters and responses should of course be in-character, and you can write the letters however you like. For instance, if you play an illiterate character, maybe their grammar and spelling will be off. Things like that!