Apparently you can. Brian Ward explains howto.

Web app from the MIT Media Lab that attempts to assemble your online identity.

Reference of reported data breaches.

Firefox extension by Glenn Jones that uses the Google Social Graph API to identify people based on the rel="me" link attribute. Easy to use—for example “Ctrl + I” (Mac) or “Alt + I” (Windows) on someone’s Twitter profile page—it pulls in available data from the present site and any other social web sites it can. According to Google’s API, the plugin can identify public URLs that belong to the person being looked up, and publicly declared connections between that person and others. Quick feedback on the identifying information you publish about yourself online.

Andrew Blauvelt on myths and changing realities of suburbia.

Nick O'Neill with Facebook privacy settings and tips.