[dspillett]

Multiple name certificates are included in that too, which is handy if you have several distinct domain names, limited IPv4 addresses, are worried about ancient browsers that don't support SNI. I have a single certificate that covers a couple of domains that way. Saves on admin too (though could be a pain if the PK were ever compromised as every service would need to be updated - if you have separate certs for everything and one is compromised you don't have that complication).