The author is clueless about how SSL works. Barring the newer TLS extensions (RFC 3546), you can only have one virtual hostname per IP address when using SSL. S

The author is clueless about how SSL works. Barring the newer TLS extensions (RFC 3546), you can only have one virtual hostname per IP address when using SSL. So if the same host IP respondes to www.foo.com and www.bar.com, you'll only be able to get a SSL certificate for one. The same things happens if you go to e.g. https://paypal.com https://paypal.com You can get around that to some degree with wildcard SSL certificates, so you can have *.bar.com served from the same IP. The newer EV certs can't have wildcards however.