We use Zarget to optimize our website. We were operating in the dark with a bunch of assumptions based on past experience about what works in the website. Though gut feeling worked pretty well, we were still lacking some accurate numbers to take informed decisions. We tried a bunch of tools, but somehow they didn't find adoption within due to various reasons - ease of use mainly. We are now seeing a clear tremendous increase in number of signups after having run a few experiments in Zarget.