Groupon is the most popular site, a Kantar Media study finds, with 80% share and 8.1 million monthly visitors. LivingSocial.com and KGBDeals.co.uk follow with 10% share each. Two-thirds of online shoppers agree that ‘I always look out for special offers’. Still, the study finds that only 37% of buyers make a second purchase from the same supplier. Recently, the Office of Fair Trading reprimanded Groupon for misleading trading practises and exaggerating deals.