I was booked also from February until mid August then things pretty much dropped off. I have been upping my price a hair but every so often, so that may make a difference. There is also a lot of competition where I live, which is driving the prices down. Also, I am sure as we get closer to the holidays, bookings will be dropping then picking up again after --which brings us back to February. I agree that messing with your price even by a dollar every day or just simply making a little tiny tweek to your listing will somehow make a difference in the algorythm, but ultimately it is other variables that gets us booking like time of year, competition, etc etc. I even have started getting messages from Airbnb telling me to give 10% discount to folks who book xyz days--I think that is indicative of it's just a slow time. The key in this airbnb venture (for me at least) is to just persevere. Stick with it and be the one that's still standing, weathering the highs and lows. Also, a great bit of patience helps.