http://blog.4ddigital.co.uk/archive/2009/12/04/applying-the-principle-of-subject-line-testing-beyond-the-email-huffington-post-style.aspxYou see that genius headline in the screengrab up there? It’s not sheer fluke or your depravity that caused it to catch your eye, oh no. In fact, the Huffington post cleverly runs A/B split tests on all their headlines. It works like this: whenever aenCommunityServer 2.1 SP2 (Build: 61129.2)