In other words, the NSA is no different from private Internet companies like Facebook and LinkedIn who think its perfectly fine to furtively copy their user's email address books in order to mine them.
Remember LinkedIn's non-apology when faced with a lawsuit from users who felt it was inappropriately accessing their email accounts? https://news.ycombinator.com/item?id=6425444
Remember Facebook's "Shadow Profiles" created using data harvested from user's address books? https://news.ycombinator.com/item?id=5926275
Remember LinkedIn's non-apology when faced with a lawsuit from users who felt it was inappropriately accessing their email accounts? https://news.ycombinator.com/item?id=6425444