A/B testing, or A/B split testing, is a method for testing two versions of a webpage: version "A" and version "B". The goal is to test multiple versions of webpages (e.g., home page vs. product page) or one specific element that changes between variation A and variation B (such as having a lead form on the left hand side or having it placed on the right hand side), FAQ to determine which version is most appealing/effective. This testing method may also be known as A/B/n split testing; the n denoting more than 2 tests being measured and compared. The data for A/B testing is usually measured via click-through rate or an alternative conversion tracking method.
As a software engineer myself, I can tell you that building funnels from an application standpoint takes massive amounts of work. There's a great deal of coding and integration that's required here. From email systems to landing page implementations to credit card processing APIs, and everything in between, so many platforms need to "talk," that it takes the bar too high for the average marketer.
Trulia did something very similar to Bills.com with their landing page. It starts with a simple form asking for "an address" (which sounds less creepy than "your address," although that's what they mean). Below this simple form field is a bright orange button that contrasts well with the hero image behind the form, and emphasizes that the estimate will be personalized to your home.
The Funnel Hacks webinar is for the serious marketer who wants to use the Click Funnels software and take their business to the highest level with state of the art training. There are several hours of training included in this system, including some of the upsell training (as mentioned above,) and a full 6 month free membership to the Click Funnels Etison software included with this package deal.
That small PDF symbol over the feature image helps set expectations for what format the download will be in. The arrow in front of the subheadline helps further direct your attention to important copy they want visitors to read. Like IMPACT, they also have an auto-checked box to subscribe to their newsletter on their form -- which, if turned into an opt-in check box, is a great way to increase subscribers. All of these small, seemingly insignificant details help bring together a solid, admirable landing page design.
There are email warming sequences that include things like personalized value-driven stories, tutorials and even soft pushes to webinars, and of course product suggestions that happen over days or even weeks. The truth is that most prospects won't buy from your website at first glance, especially if they're only just becoming aware of you today. It takes time. Thus, the funnel is a multi-modality process, as there are a variety of relationship-building experiences and "touches" that occur through several stages.
Of course, implementing this isn't easy. You need to first develop your stories, then decide on how you're going to convey those stories and at what drip-rate. For example, your first email or two might go out on the day they first signup, then one email per day might go out afterwards. How much of that will be story-based and how much will be pitches?