I absolutely hate no-reply email. I understand why it exists (autoresponders and bounces), but to send an email with no way to respond at all using the same communications medium is ridiculous.
A good example of this is the customer satisfaction survey Red Hat just sent me. It is from a no-reply email address and there is no other email address listed. There is just some text and a URL, and clicking on the URL gets me:
$ dig rhapps.redhat.com ns1.redhat.com [...snip...] ;; QUESTION SECTION: ;rhapps.redhat.com. IN A
A records are overrated.
I generally am a nice guy and let vendors know something is messed up, but there are limits, especially when I’m already on the fence about a negative experience. I’m not going to open a support case with them, because it’ll never get escalated correctly. And there’s no email address to send a quick note to. So it goes unfixed, Red Hat gets added to my mental list of vendors that don’t get it, and I blog about it, which may be worse than a negative survey response.
And for heaven’s sake, if you send out a customer satisfaction survey make sure it works.
 Here’s a test for your organization: can a customer open a support problem against your web site? Will it go to the right place, i.e. the webmasters or someone intelligent who can get things fixed? If not, why not?
 This also may mean you should add an external survey service to what you monitor.