The free inbound transfer is NOT permanent. From the post:
"Finally, we are waiving the inbound data transfer fee across the board (for all services) through the end of June 2010."
It's nice, but let's not kid ourselves about its awesomeness.
Prediction: at the end of June, they'll magically realize that they can do this permanently and they fix the free inbound traffic, or at least have a healthy free amount before payment is started. This means there will be another round of news for them.