Sneakers. And nothing but sneakers. Slang is aiming to become the best place to buy and sell kicks by removing all the unnecessary burdens that come with posting on a site like eBay. It's completely app-based, and makes it easy to both search and post items, with listing that include key details like style number, photos of the original box and receipt, release year, and the nickname. Sharing your listing is simple as well, with a unique shortlink for each pair, and when it's time to pay or get paid, the service handles it all by emailing pre-addressed, insured shipping labels and holding the money in escrow until everyone's satisfied.