What about privacy?

Despite her "general love of open systems", Jill Walker thinks OpenSocial give cause for concern:

What of privacy? What of the fact that social networks aren’t always a one-size-fits-all proposition? Just two days ago, danah boyd wrote that she is having to limit her “real” Facebook profile to real, f2f friends only, and that she is creating a second Facebook profile for her professional connections. She’s obviously not happy about “un-friending” her professional connections, but writes that she has to do this in order to protect her personal relationships. In a paper danah boyd wrote with Jeffrey Heer (pdf link), they give another example of this jarring of networks that should never have been connected: the teacher whose young students find her friends’ profiles and are horrified at them. Will OpenSocial allow for the distinctions between different kinds of friends?