NSA pwned DE-CIX

The Financial Times's reporter Chris Bryant is claiming that the report by Der Spiegel's Laura Poitras, Marcel Rosenbach, Fidelius Schmid and Holger Stark, points out that the worlds largest exchange DE-CIX, has somehow been "working" with the NSA.  He claims that the NSA has been able to "obtained around 500m communications metadata a month from Germany".

Can't imagine that they are spanning/tapping any ports as the size of the network, number of peers and the number of data centers potentially included would make this a bit on the difficult side, They must be getting some flow data or something... (??)

On a side note, Slashdot notes MITs Immersion Project, that "constructs a map of your associations. Without opening a single message, it gives a clear view of who you connect with. It's a glimpse of some of what the NSA PRISM can do."