All members should make the effort to speak in /say if the people spoken to are close by and especially around non-clanners. This is an excellent way to promote the clan and attract new recruits. Be extroverts in your roleplay! Be loud and boisterous in public places.

You can use /group when your group is scattered and the info is important.

/as (alliance chat) should be used for all clan wide communication so both guilds can participate.