It’s not real – honest. And the email isn’t from LinkedIn.
After bouncing through various URLs (including one in Russia) you end up at a fake Twitter log in page: http://wepawet.cs.ucsb.edu/view.php?hash=a9f9677418fa2d11d0b6eddda93e6e3b&t=1338784045&type=js Note the non-Twitter URL.
“I’m not sure how to respond to this CAPTCHA…”