[stickfigure]

I'm guessing that when you start snooping on the everyday mobile activity of 1.3 billion citizens you hit the kind of scaling problems that usually only Facebook and Google see.

[gscott]

Considering China records and stores millions of hours of video data among other things they are probably getting pretty good at snooping.

[movedx]

There's probably (simple/cheap) ways to overcome that, but I see your point.