According to several sources Airbnb is in the process of closing a whopper of a funding round: $100 million or more at a $1 billion-plus valuation. The round is being lead by Andreessen Horowitz, and includes participation from DST, say our sources. That’s a big increase from the company’s last funding round of $7.2 million, which included Sequoia Capital, Greylock, SV Angel, Ashton Kutcher and Youniversity Ventures (Kutcher broke the news that he’s an investor in AirBnB at TechCrunch Disrupt last week). The company, which launched via Y Combinator, has raised just $7.8 million to date. No surprise, it was a hotly contested deal. The service has exploded, growing more than 800% last year and booking 1.6 million night stays in other people’s homes to date. On any given night in New York there are more people staying in homes via Airbnb than there are rooms in the biggest hotel in Manhattan. Get the full story at TechCrunch