This is probably a stupid comment, but I was really expecting to see something trying to stop me when I closed OptKit's own tab. Eat your own food and show me how you increase YOUR conversion rates, if you manage to do that, I'll probably buy your product. Don't tell me about your product, show me your product.

Or perhaps I didn't understand what it's about...

Just my 2 cents.

EDIT: Ok, I tried again and now I got a pop up, I guess it's about timing etc. I guess if this works most of the time, it's as good as if it's working all of the time. Will give it a try!