Airbnb Another company based out of San Francisco, Airbnb, which provides users with home-based lodging options instead of hotels has become a huge hit. It's a play off the collaborative consumption economy, in which users make do with what they already have, and squeeze additional benefits out of them. Airbnb raised $117 million in a Series D financing in the latter part of 2012. In total, Airbnb has raised over $230 million, and some of those early investors, which include Sequoia, Andreessen Horowitz and others, will want a return on that investment. Though Airbnb is not public, it does have one public competitor that is close to its business model, though it's not exactly the same. HomeAway ( AWAY), which operates an online marketplace for the vacation rental industry, has seen a surge in its share price this year. Its shares have gained more than 50% this year, far outpacing the broader Nasdaq.