Independent.ie – Former England captain David Beckham has signed on to help promote Las Vegas Sands’ properties in Singapore and the Chinese gambling enclave of Macau. Sands said it hoped to cash in the retired footballer’s popularity in the region. The Las Vegas-based company is the largest casino operator in Macau, the center of the modern day gambling world. The deal may help Sands win attention in mainland China, where casinos are illegal and casino advertising is also banned. Football is hugely popular in China. In November Beckham posed for photographs with 100 children at the Venetian Macau and gave…