If you're telling yourself "well, duh," I agree. This is the kind of thing I always figured was happening with a service like Siri. That said, I am surprised that not only is information sent to Apple but that Apple STORES this information and then (possibly) sells it to ANYONE.Now, unlike Google, Apple is NOT in the advertising business, primarily, so they have less of an incentive to sell your data than a company like Google. That said, they could really be doing anything with this data.
Given that the ACLU's report has made the front page of Reddit, I'd say it's pretty likely that a lot more people are going to be talking about what's going on with Siri and I'd expect Apple to respond in the coming days as well.