Very slick but it's unclear to me if you can define tests yourself or if they're only limited to common, generic errors (e.g. form submissions, robot.txt file, 404 errors).
@bogomep - for example, step-by-step testing cases for specific functionality. In Product Hunt's case:
1) login using credentials foo / bar
2) Submit product w/ URL http://foobar.com, name "Product", tagline "some tagline", and click submit
3) Verify product is submitted
Of course this is far more complex and there are several advanced tools to do this already.
Threat Modeling e-book
Product Hunt
Product Hunt
Threat Modeling e-book
Threat Modeling e-book