Do you send unsolicited emails or direct mail?"Liars" just doesn't seem to cover it. "Liar liar pants ablaze with thermonuclear fire"`is a little closer to the mark. Consider: Does the screen capture below look like an invitation to SPAM everyone in your address book?
Goodreads absolutely, positively does not use the emails it collects as a source for unsolicited emails.
[Image from Microformats Wiki, which has a related discussion.]
Can you read the small text at the bottom that reads:
*This feature is entirely optional and is only used to allow you to access your address book. You can select which friends to invite on the next page. We do not store your password.LIARS! No sooner had an acquaintance signed up than her entire address book was SPAMMED. This being a trusted friend I started to sign up to see what was so interesting. I got suspicious when Goodreads asked for my password. A little internet searching quickly revealed numerous complaints about Goodreads and its practice of address book SPAM. While I also find some indications that Goodreads is working to improve their practices, I remain suspicious. Very suspicious.
Good News: OAUTH may be the answer needed to better protect our privacy.