I don't think any single service will kill Facebook. Hell, I don't think you can do anything but diminish them at this point. My bet is that the micro-niche makes a comeback and is what catches on going forward. We dont' care about high school friends we never talked to, or family members that blab about their dinner. What we care about are the things that interest us...HN is a great example. As more people move to a…
Unless of course the HN platform is released as an open source project.