Dec 8 (Reuters) - Amazon.com Inc (AMZN.O) said on Thursday it will roll out a TikTok-like feed on its e-commerce app, hoping to attract new shoppers through a stream of photos and videos from their favorite influencers.The move comes as shopping activity slows in response to an uncertain economy and decades-high inflation.The feature is also geared at enticing young audience who respond to formats like short videos, popularized by TikTok and Instagram.Users can access the feed by clicking on a "light bulb" button on the bottom bar in the Amazon app.Amazon has warned that its fourth-quarter sales could fall below expectations, and it recently moved to cut thousands of corporate roles."