Remember how the RIAA was getting ISPs to help battle copyright infringers after they gave up lawsuits, and AT&T was all "no comment"? Now AT&T confirms they're working with the RIAA. UPDATED.
AT&T says they're not doing any of the actual spotting—the RIAA is handling that part—they're just "forwarding notices from content providers to our customers" to edumacate them. Cnet's Greg Sandoval reports that a Comcast executive said that they've sent customers two million warning notices about infringement. [A Comcast spokesperson later added that these letters weren't part of any new campaign, see below.]
What happens if you ignore AT&T's notices? Will they disconnect you? Here is their lovely wishy-washy answer that really doesn't say anything at all: "We are not suspending or terminating our customers' service. With that said, we do refer customers to our Acceptable Use Policy, which governs use of our service." Just keep in mind, it's the same AT&T that was plotting a massive, intelligent anti-piracy dragnet that would sweep their entire network for pirated content.