It would be nice to see - e.g. in the map - which country you can have a visa free access, not just the sum of it.
Nice resource though!
http://www.visamapper.com does that, although in a quite ugly color palette..
Came to the comments purely to check out if this functionality existed and I was just missing it. Adding this would made the site really useful. If it was then iterated to a level where you can see visa requirements for employment in specific countries and it'd be an incredibly useful site.
switzerland's passport is immediately recognizable, even at this size. wow.
My country's passport is seriously outdated. I suspect some other duds are also in there as well. Nice effort though.