Author here. I recently was looking for a good WIFI spot to get some work done outside my place (where I tend to be less productive). I called out a coffee place and was told "Sure, we have WIFI". It turns out every page load took 10s or sometimes more. And I realized this wasn't the first time I had trouble finding a good WIFI spot. And some friends and family members told me they could use a site like this.
I know it's not perfect, but I wanted to get it out there and get some feedback. Enjoy (hopefully)! :-)