Probably. It's basically a certain bet that anything you post here, the NSA can read, given that anything you post here, the entire Internet can read.

But I think most people overestimate how interesting they are. Hacker News is one forum on the Internet among literally millions. There are millions of other people who are also social libertarians, and millions of people worried about eroding digital rights. These characteristics do not make you interesting. Hell, digital rights in general are not that interesting to people in Washington - for the most part, our legislators vote the way that whichever lobbyist who last had their ear wants them to, and the American public just gets caught in the crossfire.

The folks that the NSA cares about are those that advocate violent overthrow of governments, or who are a credible threat to U.S. interests abroad. Hacker News readers, by and large, are not a credible threat; we talk, but few of us will get off our butts and do. And so we're just not important enough for the NSA to care.