In my search for open-access wifi, I found the newbury open.net. I just headed to Newbury St (sort of a Park Slope, Brooklyn feel), and looked for a café with open wifi. What do I see? An Espresso Royale Caffe, my home away from home while in Ann Arbor. (I forgot to take pix of the café before I left Ann Arbor.)
The newbury open.net site has a copy of a N. Gupta’s Master’s thesis in Comparative Media Studies, entitled “Grande Wi-Fi: Understanding What Wi-Fi Users Are Doing in Coffee-Shops”. It’s linked on their publications page.