I don't buy this. If, as the article maintains, there were 100 of these a week, I think we'd hear a lot more about these sorts of incidents.
Wrt. the topic of this discussion - FBI/NSA/etc... have been monitoring what people have been checking out in libraries, so it is only natural that they continue doing it on the Internet. Of course that is blatant violation of 4th, yet citizens of this country through their elected representatives have been strangely content with it.
The search was nothing like that article described.