Hosted non-downloadable software platform and online non-downloadable computer programs for use in building, customizing, organizing and sharing grocery shopping lists, accessing information about food, ingredients and food labels, accessing information on health, nutrition and allergen, accessing information regarding menu planning, recipes and ingredients, retrieving and providing product reviews, scanning bar codes, real-time shopping and deal opportunities, providing shopping information and price comparisons, providing updates regarding discounts, coupons, rebates, vouchers, and special offers, enabling users to access online resources in the field of cooking, videos in the field of cooking, using customer purchase data to predict purchases, recommend items, and create grocery shopping lists, machine learning and artificial intelligence to predict customer purchase behavior and recommend items, reporting data analytics of customer shopping and purchasing behavior, delivering advertising to customers, customizing search engine functionality based on user shopping and purchasing behavior, and ordering and requesting delivery or onsite pick-up of grocery items