I just pulled a list of the top most trafficked products (by unique outbound clicks) posted to Product Hunt in the past week:

1) Meeet http://www.producthunt.com/posts/meeet - 4,827

2) ProducTind http://www.producthunt.com/posts/productind - 4,301

3) Fatherly http://www.producthunt.com/posts/fatherly - 4,036

4) Moment http://www.producthunt.com/posts/moment-2 - 3,833

5) NEED http://www.producthunt.com/posts/need - 3,815

6) Grasswire http://www.producthunt.com/posts/grasswire - 3,802

7) HTML 5 Up http://www.producthunt.com/posts/html-5-up - 3,775

8) Machete http://www.producthunt.com/posts/machete - 3,534

9) Withings Activité http://www.producthunt.com/posts/withings-activite - 3,052

10) YIX http://www.producthunt.com/posts/yix - 3,043

Note this includes clicks in the email and on the site but doesn't account for referrals via Twitter and other WOM channels.