answer:I’m one of those guys people ask to fix their computers, and I tend to give myself a pretty steep discount when working on my own systems. Anyways, without knowing how the group is set up, it’s hard to say. Some have pretty obvious ways to donate and chip in towards server costs, like a PayPal link, while some are often already funded well enough that they would politely refuse your donation and some are in-between. My buddy ran one here in Seattle that is a 501©(3) charitable organization. So, in short, it varies widely and depends on a lot of details I don’t have information on.