Well that was the easiest (ooh! ajax preview!) 3 minutes install I’ve done in months.
Lighttpd conditionals seem more flexible than any sane person would possibly want –
NameVirtualHosts are old hat, of course, but it’s not limited to the Host header – you can serve custom vhosts for each regex match of user-agent and other things that sound bizarre but are probably the only way out of some scrapes.