Echelon has been around for decades so this nothing really new. The latest NSA episode was supposedly based on developing social network patterns, which even the developers and experts of it say was a nice idea for a time and made for pretty diagrams, but none of them have any value. It's like reading tea leaves.
The terror industry is just like any new industry: create a market then fill that market need. Show up in Washington with any half-baked "anti-terror" idea and you'll likely get a contract.
The TSA itself has said that they're spending money as fast as they can (the true measure effective programs in Washington, which is going to have to be paid for by whom?), but security is no better now than it was 5 years ago.
Old-fashioned investigation of people with motive, people who acquire materials, people reported for suspicious behavior and investigators as smart, or smarter, as the people they investigate is, I think, more effective. Unless I get a contract for my new "terror anticipating ouiji board detector." That will be effective, I promise. I can advertise it on the "Terror Channel." 24 hours of global terror information, alerts, tips, terror business news and video footage of planes crashing into buildings over and over.
You can't stop determined and clever crazy people from doing something 100% of the time. Won't happen. But the odds of it happening are not higher now than 10 years ago. Meanwhile, watching the other drivers on the highway are still your best protection at saving your hide.
Nevertheless, someone has to watch the watchers and listeners because someone will always abuse authority and power.