There are changes that go on in any industry.

The way people opt-in is changing too.  People often have a junk email account they get all their newsletter to, or they use filters in GMail or Outlook.  (I'm into Gmail personally with their tagging feature instead of folders.)

But a great way to let people know they won't be spammed on your opt-in page is to (instead of saying "We hate spam too,") is to say something like "Any email you receive comes with an 'unsubscribe' link. "

It's clear, direct, and boy there's nothing more annoying than getting a newsletter without a clear unsubscribe link.  Aweber makes it really easy to that, and people TRUST being able to click that link.

Anyhow, think about how people look at your opt-in boxes on your squeeze pages.