So, isn't this basically a massive distributed attack on wireless security by Microsoft/Facebook? Similar to what Google's done in the past?

And of course, all this data is open to .gov subpoena, yes?

EDIT:

Oh boy!

Some WiFi hotspots ask you to accept the terms of use in a web browser, provide additional information or do both before you can connect. WiFi Sense can do these things on your behalf to get you connected quickly.

Yeah, this isn't a fucking trap at all.