Mine comes and goes as it pleases. It usually fades in and out. I don't worry about it. I usually fill up at 400 miles, I'll run dry by 430-450.
I would not recommend doing what Danny (Dindale) suggested... fuel pumps hate running dry or extremely low. The fuel is what cools them and keeps them happy.
99-01 Honda Odysseys had a weird fuel gauge problem and resulted in Honda redesigning the fuel sending unit, I wonder if it crossed over to the Accords.
Long story short, you should all know your car well enough to know when it needs gas, using the gauge or the odometer. The fuel light is for dummies!