How to block the NSA from your friends list

Atticus Rex writes: The fact that our social networking services are so centralized is a big part of why they fall so easily to government surveillance. It only takes a handful of amoral Zuckerbergs to hand over hundreds of millions of people's data to PRISM.

That's why this Slate article makes the case for a mass migration to decentralized, free software social networks, which are much more robust to spying and interference. On top of that, these systems respect your freedom as a software user (or developer), and they're less likely to pepper you with obnoxious advertisements.