Instagram attracting more advertising than Twitter: survey

Advertising agencies are for the first time turning to Instagram more frequently than Twitter for social media ad campaigns, a survey released Thursday showed, a further indication of weakness in an ad sales operation that has been one of the few bright spots for Twitter.

The survey, from a unit of Comcast called Strata, came the same week Twitter Inc said its head of product, who took over the team in September, was leaving. The research firm eMarketer said earlier this month that Snapchat was on pace to surpass Twitter in U.S. active users, highlighting the threat Twitter faces from faster-growing competitors.