Lil idea

[Mottmon]

There ARE alliance private forums. Put the alliance form as your homepage for the alliance... You have to host your own site though.

[Seyhall]

Well, it's not inside the game but outside the game. You can use any forum you want. There are many free forums, and you can make them private so only registered users can read them.

http://www.coolbb.net
http://www.forumer.com

There may be some in your own country that support your language too.