Accenture’s Holiday Shopping Survey found thatUS consumer spending is expected to increase this year and the usage of social media platforms for holiday shopping is rising quickly.   The online survey of 1,500 U.S. consumers found that Americans will spend $658 on holiday shopping this year, on average, compared with $632 in the 2017 survey. Nine in 10 respondents said they plan to spend as much or more than they did last year – 53 percent and 36 percent, respectively – with only 11 percent pl...