Lemony yellow

What happens when Snapchat puts on a Hollywood event

Remember the app Snapchat? For a while it was red hot with young mobile users, but then Facebook tried to buy it, and when that offer was rebuffed, Mark Zuckerberg blatantly ripped from it to prop up his Instagram.

Snapchat kept growing, but Instagram ended up dwarfing it, to the point where IG now has more than double the active daily user base, some …