Noderunner runs out of my pocket, but donations certainly help to defray the $3168/year cost of keeping the domain going. Of all the Noderunner users, only one ever donates regularly; $10 every two or three months, which is appreciated. Seriously, though; if you use Noderunner, any of the games on Noderunner, any of the hosted sites, or whatnot, consider a PayPal donation.
You can do it to firstname.lastname@example.org (business account) if you want the added security of a certified business account, though PayPal slurps a bit of the payment off in charges. Or you can donate directly on my personal PayPal account, email@example.com, which is just a personal account but doesn't slurp a percentage.
This isn't a 'Noderunner is going away!' sort of thing, but it is a 'if you use the service, please consider tossing a few bucks towards the upkeep every now and then so I don't spend quite so much out of pocket on this' plea. ;)
Edit: Paypal does not allow free (i.e. personal) accounts to receive credit card payments because of the credit card transaction fee. If you want to donate to Noderunner by credit card directly instead of using a paypal account, you need to use the firstname.lastname@example.org address; sorry, I hadn't remembered that earlier when I mentioned it. Info is here on PayPal's site.