Interesting concept. I use http://www.unbounce.com http://www.unbounce.com . Landing page platform with a/b test features and integration with lots of third par

Interesting concept. I use http://www.unbounce.com http://www.unbounce.com . Landing page platform with a/b test features and integration with lots of third party systems - mailchimp, kiss metrics, aweber, lots of templates etc