Nike let customers RSVP using Twitter to buy a new shoe.

Brands are increasingly using Twitter in innovative ways—e.g., via “micro-affiliates” or for e-commerce. To help manage demand for sought-after new sneaker editions, Nike recently debuted a Twitter RSVP process that allows customers to reserve a shoe at any of a dozen U.S. stores, avoiding long lines and mayhem. Sneaker fans must follow the Twitter account of their local store, which sends a tweet at a random time on the designated day. Consumers must then direct-message the store within 60 minutes, including the product-specific hashtag, their name and shoe size. Shoes are awarded on a “first respond, first serve” basis and can be picked up on the launch day.