Close, but they failed to discuss the real problem with Facebook. Privacy is less than a nonissue. The real problem is that it is a black hole: anything more than 2 weeks old is basically irretrievable ('download your information' includes only wall posts, not comments). They also failed to mention why Facebook is successful: something like it is practically required for most women to communicate over the internet.
From the '80s until today, BBSs, the usenet, mailing lists, and other online interest groups have been overwhelmingly male. Myspace was the first large forum to achieve a high female/male ratio. The key ingredients seem to be:
1. photographs to identify correspondents (rather than addresses)
2. reciprocal relationships - women don't want anybody to be able to contact them
3. many:many conversations (such wall posts)
