Facebook has just added a lot of new features to its offering, buttons and graphs and likes and widgets galore. Of course among the various discussions about Facebook, one issue keeps coming up is that Facebook, as it gets bigger, is a single point of failure in people's online lives and identities.
If you think back, there have been a lot of "single points of failure" in peoples online lives. I remember when ICQ was the big chat program, when LinkedIn had no competitors, when everyone worried about Twitter owning people's lives (remember that?). There's always a worry that some provider or web service will dominate everything – and then bad things will happen with hackers, TOS changes, etc.
So we've had a lot of worry about points of failure in our internet lives. Though I have yet to see a Great Online Life Destruction Debacle, it is a possibility of course. However, I've watched many a gloom and doom story about the internet and have yet to see Netageddon happen.