Namecoin Forum

Lots of TLS-related services affected. Browsers, servers, VPNs, SSH, mail clients, etc.
see https://weakdh.org/
In-depth analysis: https://weakdh.org/imperfect-forward-secrecy.pdf
Instructions for admins: https://weakdh.org/sysadmin.html

The NSA is such a pain. I wonder how much more of the world's time, money and mental health they want to waste.

It's hard to blame this one on the NSA directly. All affected servers had already been getting an F on SSLLabs for ages. Fun fact, my university's service that lets you see your grades is affected. (OU's IT people are beyond incompetent. Someone should sue them for endangering student record privacy.)