Libraries, Web/Library 2.0 and privacy

I have some random thoughts on Library 2.0 and privacy. First, Google moots privacy. An amazing amount of information can be found by, about and on just about anyone who has ever posted anything in a public forum. I was amazed to discover that, if I Googled my old email addresses, posts to USENET forums appeared in an instant. Fortunately nothing embarrassing appeared.Second, the propensity of web users to think themselves anonymous is a mistake; everyone should beware of an ¨overshare¨ about any aspect of their life, personal or professional. I spent used Google´s alert service for a couple years to tickle the Zeitgiest and see what of mine popped out. If nothing else job searches will be more interesting the next 20 years compared to the last 20. I wonder when the first suit will appear because someone was denied a promotion or job based on what they said on their own blog, or someone elses?Third, librarians have always had a mixed track record on communication, involvement and openness with their management and customers. Social computing tools can make communications easier, but that investment of time and money might be better spent on selling & marketing library services, and measuring the impact (for good or ill) on their customers. Libraries are not businesses, but business tools and techniques can still be used productively in educational, government and non-profit settings.Fourth, social computing environments are flux right now. Finding the right mix of products and services, by vendors for libraries, and by libraries for their publics, won´t be easy. Librarians can´t ignore social computing; they also can´t be slaves to fads or fashion. Careful attention, modest financial investments and reliable measurement are needed to find the right mix of tools for libraries, their customers and their vendors.Who is addressing one, several or all of these points well? Any ideas?