I really liked the page and you got me hooked with the service.

But initially I missed the point on the search for the hidden images. I searched with the magnifier but I didn't clicked the button so I was there for an entire minute just moving the mouse (congrats on that :)). I think it could be expressed more clearly what the visitor is expected to do.

About the product. Just iPhone? I guess you missed an user there. Another suggestion: being a father of a 3 month baby I miss a service were I can register my baby growing. I take a lot of photos but there is nothing out there (that I know of) that let me easily aggregate those photos into a living album. I just realized Persona could be just that with slight changes. Think about it as a possibility