The house church leaders in Denver meet together each month. We have two goals when we gather - connecting with each other on a heart level and hearing what God wants to say to us.
At our last meeting on 11/13/09, after dinner our group of 25 broke up into smaller groups and did SASHET. Then, we spend time alone listening (ie, VIRKLER) to God about this questions: "What do you want to say to us about Denver?" After about twenty minutes, we shared what we had heard in our smaller groups and then with the whole group. Out of this corporate listening time emerged a very encouraging prophetic message which you can read here: http://www.coloradohousechurch.com/blog/2009/main/report-from-the-denver-network-all-city-meeting/#more-377
The point? The two basic disciplines of SASHET and VIRKLER are effective tools with two people (CO2), with a small group (house church) and with a city-wide group.