This is better than a flashy flat one-page design with a lot of color and no substance. It's more personal, and is a unique touch. I know why he created the product, what it does, and how to get it.
As for the product itself, I think there's a real need for better bookmark organization that's done well. I'm not sure if this is it, because from the features exhibited it seems a lot like just using Evernote Web Clipper. I'd like to see features that help organize my bookmark folders better, maybe using tags for links and folders or some other creative organization tactic. Evernote WC can do this, but it doesn't do it in a lightweight way where I can get good overview of my links.
Better yet, having a relation graph would be nice too--grouping by links added in a certain session or around a certain concept. For example, I want to find all of the links I found when I was looking up "CSS vertically centering div".
Anyway, great work OP.