Airbnb is all the rage these days. It’s interesting to read this brief article by Paul Graham about the company's beginning and come back to the “ramen profitability” concept that PG talked about a lot in the past. Startups are on the mission to prove themselves that they are on something interesting enough so that people are willing to use and buy what they create. Ramen profitability is a practical great way to set short-term goals and test your hypothesis.

https://blog.ycombinator.com/the-airbnbs/