Between, an app that originated from South Korea for couples to share their moments in a private social network, is developing its platform as it launched an e-commerce store today first in South Korea, where 60 percent of its users are. This comes after_billion-dollar Japanese mobile games firm_DeNA_invested in Between earlier this year, which we predicted would lead to an array of other services including mobile commerce and games, as DeNA is most well-known for that. Between is teaming up with local Korean partners such as 10×10 and Wincube Marketing to launch a gift shop for couples, where mobile coupons...