I thought TOR was about the worst thing you could use? Hasn't it been exposed? I thought it was unsafe now. Someone please correct me if I'm wrong.

It is important to remember two things; Tor doesn't monitor the inbound and outbound traffic of it's network and the Federal government has more than enough resources to be a majority of the nodes on the network. Although all data internally is encrypted upon every pass, the weakness with the entry and exit of the network remains.