Search-engine optimization, or SEO, is the key to making content rank highly in natural or organic search results. And while these "free listings" in a search-results page are technically, well, free, most companies pay folks trained in the. Seo In Young dropped a new selfie. On October 8th, Seo In Young uploaded a new selfie on her Instagram. The photo shows Seo In Young taking a selfie in a car,…