Lustro - milkcarton
A cute little Mac app that exports your address book contacts in multiple formats ...including an HTML file with hCards!
Link tags: address_book
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Coding Horror: Please Give Us Your Email Password
An excellent rant by Jeff Atwood that explains just why the password anti-pattern is such an abhorrent practice: "How did we end up in a world where it's even remotely acceptable to ask for someone's email credentials?"
Yahoo! Address Book API - YDN
You can know use an API (with BBAuth) to get contact Yahoo account contact details. There really is no excuse now for still using the password anti-pattern.