(Click with caution: very strong language from the outset, NSFW) It turns out that some users of streaming video service Justin.tv will turn a video camera on their telly, and do "alternative" commentaries on football matches. I'm a Rangers fan, but still find this alternative description of the last Old Firm match memorable. Alan, a Celtic-supporting friend who sent me the link, reflects: "For 100 years the Celtic have claimed the intellectual high ground over the Rangers. Discuss in the light of this clip." I say: in this age of user-generated content, maybe all commentary will sound like this one day. [Mrs Tosh adds: "he sounds just like you when you're watching an Old Firm match. Don't kid yourself."]

"By way of background, I was a partner in a tech-focused investment bank in the 1990s and became fascinated by the behavior I observed during the internet bubble, particularly that of my partners, who ignored my warnings in late 1999 that the end was near [so much so] that I returned to academia, got a PhD in psychology, and now teach a class in behavioral economics at Columbia Business School while conducting research on bubbles."