[brianogilvie]

I make the decision about projects vs. folders pragmatically. If an area of responsibility has a lot of substantial projects under it, I make it a folder. If it tends to have very simple single actions, I create a single-action project for it. Given your examples, I would choose folders. (You can nest folders, so all of yours could be in a "Work" or "Sysadmin" folder, for ease of organizing and focusing.)