If you read the threads, however, you'll find that its not necessarily "for real." MCI compounds the problem of overworked, undertrained, underpaid customer service reps by instituting complicated reward plans with hidden rules that only get revealed after 18 phone calls.
I have two phone lines. On one, the 25k program (last year) worked fine. On the second, I'm still waiting after 2 months. SWITCH AT YOUR OWN RISK!