For a few years I did run my mail/web/... servers on a light virtualization host that billed by actual memory, disk and CPU use by minute. It's amazing what opt

For a few years I did run my mail/web/... servers on a light virtualization host that billed by actual memory, disk and CPU use by minute. It's amazing what optimizations one finds to lower the resource consumption when it has direct effect on the price. At times I was running for $0.5/month :D