You need to make your email and Skype accounts secure with strong passwords so that nobody is able to hack them. Your phone calls should be confidential and if you are using Viber, its password needs to be secure as well.
You may want to keep separate accounts for the important team of people so that you do not juggle up the conversations with your other less involved friends. That way you can track where you left off with your team of people regarding a world problem issue.