Have email viruses had their day?

ZDNet reports that

some attendees at the Infosecurity Europe conference think the
email virus’ heyday is over
. This is an interesting observation
and one I’ve noted just this week.

Much of my personal e-mail is delivered through a service with
mail filtering outsourced to
Postini. Here, unwanted mail
is blocked on the server and identified as either containing a
virus or being spam. Every few days I sign in to check that there
are no false positives (usually mail that could be regarded as spam
but that I might want to read anyway) and to delete the junk. I’ve
noticed that the red list of mails with a virus has diminished
drastically in recent weeks while the amount of spam has remained
fairly constant.