Oh I'm well aware of the existence of operating systems that run in 32MB of RAM or less. So - why not? I think a well-optimised application server (especially one that uses SQLite as a datastore like the article proposes) can fit just fine in 128MB of RAM total, or 256MB if we're being generous. A whole gigabyte of memory seems rather extravagant, no? You could run half a dozen properly optimised apps on such a box.