It's super popular all over south-east asia. One of the reasons are the cute and fun "stickers" that can convey 80% of your daily emotions and situations. Stuck in overcrowded subway? there's a sticker for that.
WeChat and Line are definitely growing though. Not sure about elsewhere, but they've both been marketing pretty aggressively of late with TV and print commercials, billboards, store promotions etc.
how do you navigate through the stickers?