At the tasting sessions with old friends this week – London’s first snowfall evening – I grab the opportunity to participate in Yoko Ono’s participation painting experience. She cuts out ‘I LOVE YOU’ in a piece of acrylic and lays that over a canvas. You add your bit, and after a while, she removes the acrylic leaving the words ‘I LOVE YOU’ painted on the canvas. Canvases from exhibitions around the world go to New York for the grand finale. It’s pretty cool and goes to show that participation is not just for postmodern marketers. She’s been doing it since 1966 apparently. After bagism, UGC is all you need.