I was thinking about this the other day, the fact that we don't know Penny's last name.... Also, Leonard's middle name is "Leakey" after Louis Leakey of Lucy fame...
Pixiv is another social site I had not heard about. It is a Japanese version of deviantart. In his piece titled, Pixiv VS Deviantart, Jon Lock depicts Pixiv in the tradition of delicate beauty which is charateristic of the Japanese cluture. From what