The Week: Advertising news - Survey dents Twitter's role

Just 8 per cent of advertisers think that the social media site Twitter is a "very effective" marketing tool, according to a poll conducted by Harris Interactive and LinkedIn.

While 50 per cent of advertisers agreed that Twitter is "somewhat effective", 34 per cent said that Twitter was "not effective" as a marketing tool. In the survey of more than 1,000 US advertisers, 8 per cent said that Twitter was "not effective at all" as a marketing tool.