Google Website Optimizer (WO) (http://www.google.com/websiteoptimizer) This is a free tool that, like Google Analytics, is better than most paid services. I used Google WO to test three potential homepages for www.dailyburn.com and increased sign-ups 19%, then again by more than 16%. Offermatica (www.offermatica.com) Vertster.com (www.vertster.com) Optimost (www.optimost.com)
