I just rec'd an email from Truvia for a free sample. The links are user specific.

Email from: Truvia
Subject: Your free sample has arrived

If your signed up, try adding your email at the end of this link:

https://www.truviastore.com/sample_request.php?r=091106000058&e=

For future, sign up for their E-Club HERE (http://www.truvia.com/e-club.aspx)