Yahoo Inc. is relaunching its small business e-commerce product with Yahoo Stores, which aims to help anyone sell anything online. The offering comes as other digital marketplace companies also jockey for users. Yahoo Small Business head Amit Kumar told me that the process allows people to build a store in two minutes and immediately begin accepting orders. It’s kind of like a data-driven, personalized online marketplace. The last time we talked to Kumar, he walked us through Yahoo’s previous small business platform that was in use for 15 years.