I will note that I did get a chance to toy around with it some and it did not, out of the box, provide the extensive level of configuration that other alternate DNS servers provide. That being said, since I currently use OpenDNS as a means of content filtering for younger users, I could see me setting this up on other machines to provide bad URL redirects without the content filters.

I still would have preferred if it was an opt-in service though. =)

Please stop. You don't have the best reputation as a service company, and this does not help AT ALL.

By the way, don't think I'm doing anything but biding my time until I move to an area with some competition. You people are a shining example of why monopolies are bad for consumers.

If you have an older login username (what Comcast now calls a secondary login), you can't really opt-out of the service via that link posted above.

You are required to sign into your account as a Comcast.net user. If you try logging with your non-comcast.net account login that previously worked, you are re-routed to a new login and terms of agreement. That page explicitly states that you can only access your "User settings" with a primary (ie, comcast.net) acct login.

You are then asked to 'update' your login, accept their new terms of agreement and literally "Delete" your current username.

That is not Opt-Out of a service.
It is forcing a service upon users, then 'coercing' them to join comcast.net, agree to a whole new set of terms, and delete the username/account (and those terms of service) that the Domain Helper was applied to in the first place.

I don't know how you can call that "opt-out" if it's not an option under my current login--the same account in which you added the Domain 'Helper'.

http://blog.comcast.com/2009/09/unified-terms-of-service-and-privacy-policy-for-comcast-websites.html

Domain Helper has nothing to do with it. However, if you want to opt-out without logging into Comcast.net you can always configure your computers to use one of our non-Domain Helper enabled DNS servers manually.

The list is available here: http://dns.comcast.net/dns-ip-addresses2.php

The issue I was referring to was that in order to opt-out of Domain Helper Service, the only *readily* available means was through a primary login via the comcast.net website.

Quoting from the page itself: https://dns-opt-out.comcast.net/
"If you are using a secondary account, you will not be able to view preferences for Domain Helper.
If you require assistance with opting out in Comcast customerCentral, please click here."
Which leads back to a comcast.net login page.

That opt-out offers no explanation of simply changing the DNS settings on a router. Rather, it points back to a login screen, and some instructions that the MAC address of the comcast modem would be needed etc, etc.

Maybe you can reword that page to include what you are telling us now?

The Domain 'Helper' service breaks this brilliant feature, so now typing what would have taken you to your favorite pages now sends you to a page where Comcast can serve you some ads and get a kickback for choosing Yahoo as their search partner. Don't try to spin this as a positive--this is money grubbing at its worst. I urge all Firefox users to install the NoRedirect extension (http://code.kliu.org/noredirect/) and add http://search3.comcast.com/ to the blocklist (be sure to check the button in the "DNS Error" column). It's a shame that this is necessary for two reasons:

1. This is clearly a case where opt-in is more desirable over opt-out.

2. The means they provide TO opt-out are flawed, as made obvious by the various complaints here in the comments.

Shame on you, Comcast. It is not hard to see how this will wreak havoc on not only simple conveniences like Firefox's redirector, but also on more serious aspects of internet use such as POP or IMAP email accounts or any kind of VPN functionality.

Are you TRYING to break the internet? Add this to the greedy tiered internet access you are testing out in some markets and it certainly seems that way.

Secondly, most of the opt-out complaints here were expressed when we were using our old method of opting out. The new method (logging into Customer Central and toggling a switch) is very easy to do.