Workers for Instacart and other gig services are tracking which houses tip bait, including by marking offending addresses on Google Maps.David L. Ryan/The Boston Globe via Getty ImagesWorkers for Instacart and other delivery apps are marking tip-baiters on Google Maps.The goal is to help other shoppers and delivery drivers avoid low-tipping customers.Several points labeled "Tip Baiter" disappeared from Google Maps after Insider reached out to Google for comment.The battle over tip baiting has a new front: Google Maps.Gig workers, like those working for Instacart, have long resented so-called tip baiters, or customers who place orders with a generous tip only to reduce or cut it entirely after their ride or delivery.