By your logic, they've "gotten around the objection".
Not so fast. The full objection that people have with spammers isn't that the spammers have their email address. It's exactly how the email is used which comprises what people object to.
I've been looking at Padmapper, and as far as I can tell, they are basically providing a better interface to Craigslist largely by aggregating data that Craigslist doesn't claim to own.
Specifically how is Padmapper competing with Craigslist? How would such a mechanism not also apply to Google News, reddit, HN and various news sites? Is a "search bar" extension in Firefox competing with Google?
