Youth are not creating digital publics to scare parents - they are doing so because they need youth space, a place to gather and see and be seen by peers. Publics are critical to the coming-of-age narrative because they provide the framework for building cultural knowledge. Restricting youth to controlled spaces typically results in rebellion and the destruction of trust. Of course, for a parent, letting go and allowing youth to navigate risks is terrifying. Unfortunately, it's necessary for youth to mature.
An interesting talk overall, but this summary quote caught my eye because it reminded me of something Whit Diffie said onstage at RSA a couple of weeks ago: "Security codes for legitimacy." That observation goes a long way towards capturing what goes on between parents and kids regarding MySpace.
Ultimately, any "security" measures applied to MySpace, in an effort to secure kids from whatever parents percieve as a threat, will be devised with the interests of the owerful stakeholders: parents, government, and risk-averse corporations. Notice who won't be represented? The user, the individual, the kids.
Not being The Man has its downsides.