Tamba Internet account director John Broomfield said although many retail promotions are time sensitive, messages can be added explaining the offer is no longer applicable. This, he claims, will not affect the brand's reputation.
"Viral games are a mechanism to mass market a message and yes they are time sensitive, but provided it's done correctly everyone gets something out of it - the user enjoys a game and the brand is promoted," he said.
Tamba Internet has produced a viral memory game to promote E-Commerce Expo, which takes place at London Olympia on October 28 and 29.