What do you expect for FREE?
For those that complain about commercials when making free calls, I would suggest getting a cell or landline phone and paying for it. Or, pay Whistle for ad-free calls. I would not pay for outgoing with Whistle, there are plenty of alternatives that are less expensive for calling from a computer. But this company is not in business to go bankrupt, they have to generate revenue somehow, and I would guess the amount of paying users is small, given the pricing (currently .017/minute).
The interface is ok, the asthetics are awful, but free and good looking generally dont happen.
marcotor about
Whistle Phone