Interesting concept and I like the design. My only suggestion is to consider drawing in users a little more before prompting them to give personal info via the Google sign in. Maybe this could be accomplished by connecting some kind of interactive demo of an experiment to the "Try it now" button. In any case, I was interested in the site when I clicked "Try it now;" I just wasn't quite hooked enough to give up my info at that point.
Thanks for the suggestion, and I agree - it's definitely something I'd like to improve, but since I do this for fun in my free time I have limited time and try to focus on the science / data-analysis side. Thankfully Sina was kind enough to make it look much better.
