IT'S a mystery why money is splurged before Christmas when it can be saved during the Boxing Day sales but enjoy the crush in the last-minute rush. Those who refuse to shop 'til they drop have an ally in US evangelist Reverend Billy and his Church of Life After Shopping. Billy, a performer named Billy Talen, spreads his anti-consumerism message with the Stop Shopping Gospel Choir and Not Buying it Band. If you are going to shop, endeavour to reduce your carbon footprint. There is ample time to peruse Billy's website because Postcode 3000 is signing off for the year and will return on January 18. Here's a Carbon(e) credit for a cool Yule.