If your phonebill is a $1000.00 a month, all I can say is at 5 miles per dollar spent. Yahoo, and I thought I was doing OK at $100.00 a month. I've found with MCI that if you can tell them that you had signed up but meant to sign up for the 25,000 mile promo they'll give it to you. I didn't even ask and I stll got it.