Yes.

Registering for Pandora will provide you with a free, advertising-supported Pandora account.
You are never required to pay anything to use Pandora.
However, free Pandora accounts will only play 40 hours of music for free per month. Only a small percentage of Pandora listeners ever reach this limit. However, if you do reach the 40-hour limit and the music stops playing on your computer, you have two reasonably-priced options to continue listening.

You can also choose to pay nothing instead, in which case you will receive another free 40 listening hours on the first day of the next calendar month.

Each month in which you hit this 40-hour limit, you’ll have the same choice, month in and month out. We never bill you after the fact, nor do we charge you automatically, or anything sneaky like that. If you’re giving us money, you’ll know it– each payment will be up-front and initiated on your end via credit card.