Instagram

An interesting look inside Instagram, who have stayed shockingly small despite their wild success and where Justin Bieber is a “scaling problem.”

Instagram isn’t just small; it’s tiny. It’s miniscule. It is famously located in Twitter’s old digs in San Francisco’s South Park neighborhood. But here’s the thing: Instagram subleases its space from another company. Instagram isn’t in Twitter’s old office, it’s in Twitter’s old conference room.