personal rule of trading.......buy the leaps. Too short time windows too much risk. Buy deeper in the moneys with a long expiration. This stock is re defining an entire industry. Its actually a e commerce revolution taking place. I'm still getting lots of first time home away guests that had great experiences vs hotels.....being able to cook ones own meals is huge. It saves big $$$ for families and makes the experience superior. Also not hanging out at the end of the bed vs a hotel. Night and day difference for less money. My take is its going to go viral once people have great experiences. Also the rating system increases the probability that you'll have a good time and not get screwed.