A new Twitter ad format that promises exclusive content to those who interact with a marketer's message is being trialled this week by Puma. It is using the "Flock to Unlock" tool to raise interest in
its"'Forever Faster" campaign that begins on Thursday. Athletes involved in the campaign, including Usain Bolt and Mario Balotelli, have tweeted calls to action. If enough people respond they will get
an exclusive preview of the campaign.
Read the whole story at Marketing Week »
