I like this technique, and I think it would be appropriate to extend it other hierarchical types of data besides just text. For example, a product page might s

I like this technique, and I think it would be appropriate to extend it other hierarchical types of data besides just text. For example, a product page might show a list of reviews, with each shown as x/5 stars, and zooming in on the reviews would show the review text. Same with product info - zoomed out = overview, zoomed in: more details appear. This would require zooming in on a specific section of a page though, not just making the entire page bigger. Imagine browsing an online store or search results by zooming in/out using a touch interface, rather than clicking on links to details/reviews/photos