Here’s a cool thing from Medill Journalism School — a Flash presentation showing how your personal data can be used by the federal government or analyzed by intelligence agencies. (Yes, Flash can be annoying, as we’ve been hearing a lot lately; but there are some things, like this, that it can do very well; so give it a whirl.) It reveals how the government uses data mining and what data, from both public records and private data aggregators, is studied, what the privacy rules are and whether they’re followed – and outlines “the digital trails we all leave in our daily lives.”