What do YOU do with your Cash Flow?

Hey guys. Cash flow. What do you do with it? I've been looking at rentals and getting the game plan together. I always assumed that cash flow would be saved to purchase the next rental. But it was suggested to me here on BP that a 10% management fee be figured in as an expense whether I managed or not. That got me thinking about actually spending money from rental revenue. Do you guys spend, save or reinvest?