1. Strictly only icons, wallpapers, banners, colourbars and any kind of graphics made from the Kingdom Hearts, Kingdom Hearts: Chain of Memories and Kingdom Hearts II manga and novel series. Basically, as long as it's KH-related and drawn by Amano Shiro, then it's fine. If you make a big batch of icon mixes and have some manga/novel icons in that batch, yes, that is allowed here.
2. No plugging icons that aren't made by yourself. If you do want to plug someone else's icons, ask for their permission first.
3. Pairing-related icons, either straight or homosexual, are all allowed. Just make sure you leave a notice on it.
4. Obviously, all members must be nice to each other. I might not mod this place much but I'm not scared to use my mod powers if anything bad bursts in here! >:O
5. Of course, LJ-cut your stuff except for the teasers. Also, this isn't a must but it'll be very handy to state outside of the LJ-cut what characters or pairings you have in your batch instead of just "Kingdom Hearts manga icons" because that's just... obvious. :P
6. Feel free to use this resource list entry to look for scans. If you're an icon creator, I'd rather you credit the scan providers instead of this community, though. (Unless the scan provider doesn't want to be credited?)