Low-cost hosting
While there are 
a number of low-cost
providers, the ones I am happy with are:
- RamNode.  
	$15/year gives you 128 megs of memory, 12 gigs of disk space, 
        500 gigabytes of bandwidth, an IPv4 address, and IPv6.
	
Since the node is on a SSD, the speed is quite fast.
 - BuyVM.  This is the
	original and most well-established and reliable low-cost virtual
	server provider out there.  $15/year gives you 128 megs of memory,
	15 gigs of hard disk space, 500 gigabytes of bandwidth, one IPv4
	address, and 16 IPv6 addresses.  
Permission required before one runs a 
	mailing list (to make sure the list is a listserv-style opt-in
	list instead of a spambot).
 
Note that BuyVM does not always have low-cost $15/year nodes available, 
but stock is regularly added.