Adgrunts can subscribe to the posts (or topics!) that you want to know more about.

There are many reasons to subscribe to a post. It might even be your ad and you want to know what everyone thinks about it. You choose to subscribe to individual posts beneath each post - see the far right link here?
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-

*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
Once you've clicked that, you'll get an email each time someone makes a comment on said post. You can manage your subscriptions on your user page - and from here you can get a custom RSS feed of all the posts that you subscribed to as well. Never miss another snark!
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-

*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
How's that for easy?

Heck, if you want to, you may also subscribe to everything within the same "category" (topic) such as "advertising jokes" or every car ad we post under "cars metal and things that go"
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-

*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
That way you can narrow your subscriptions down to all the stuff you really don't want to miss. :)