Will online business be forced to collect state sales taxes? That question will go before the Supreme Court sometime in June. Traditionally, businesses only need to collect sales taxes in states where they have a physical presence. But South Dakota recently passed a law to change that. Two companies, Wayfair and Overstock, sued the state. Marketplace Tech host Molly Wood spoke with Josh Silverman, the CEO of Etsy, about how the court battle could affect smaller online retailers.