I just called to port my existing bell phone # over to FPL today, but I was a bit saddened to learn that after 90 days of inactivity FPL will cancel my home number that I paid to port over after this period of inactivity.
Now it's pretty unrealistic that I'd not use the service to make a single call in a 90 day period, but what I'd like is the peace of mind of knowing that FPL will not cancel my service on me after inactivity. I'd even be willing to go so far as to PAY for this benefit. Therefore that is my suggestion for you to be more profitable. Sell this for a monthly fee and I'm sure lots of people would be happy to oblige to the fee for the peace of mind.
Fongo charges $4.95 / month, so FPL should do something similar. I never want to lose my original bell number!