Typing in an e-mail address, and giving up your friends’ too - NYTimes.com

I THOUGHT it was a little strange when I received separate e-mail messages from two people I knew only slightly asking me to click and see their photos on a social networking site called Tagged.

I ignored them at first, but then thought maybe I should check it out. After all, I should keep up on what’s hot in the social networking world, right? This could be the new Twitter...