Is creating a second app.yml-like file enough for multisite?

This sounds like something which would help me. I could reduce my costs by consolidating two hosts into one (slightly) bigger one.

If you are successful I’d much appreciate a description of your setup. I’m an experienced linux admin but not experienced in this area.

I hear you, but having read that several times in the past I’d be interested in something simpler. Both my forums are small and low traffic.