I think you should put that energy into making a great product and marketing to get the word out! Look at it my way: If you spend 40 hours doing A/B testing th

I think you should put that energy into making a great product and marketing to get the word out! Look at it my way: If you spend 40 hours doing A/B testing that could be 20 hours adding that one cool feature and another 20 hours doing PR to get the word out. Yes if you've already spent $100k to build your product and another $100k for a banner ad campaign then put up that wall and hold onto each body -- but if you aren't that stage really focus on making something great. You'd be better off getting people on the site to tell a friend than to drive away each person with a signup (look at dropbox as an example).