Airbnb says it helped travelers collectively save $12 million on Memorial Day weekend last year by offering them accommodations in homes versus hotels. This is based on Airbnb’s analysis of hotel prices versus Airbnb prices last Memorial Day weekend in 14 cities and seven common tourist destinations. In San Francisco, for example, the average hotel room rate last Memorial Day weekend was $199, compared to an average room rate of $145 on Airbnb. On an individual basis, that was about $54 in savings per room. You can take a look at how Airbnb did its calculations below. Get the full story at TechCrunch