If you want better communication, clarify the following:

• Who is the single person who has decision making authority for decision X
• Who should have input into that decision
• Who should be informed when the decision has been made

This sets everyone’s expectations for who needs to know what.  It reduces endless forwarding of fyi material on the hopes someone might need it.

Scott Berkun, “How to stop overcommunication“, Jan 21, 2010