I'm so sorry that happened to you. I was going to do that offer, but kept putting it off. Then I was looking around some other sites and started to read about other people who did the offer and got a virus on their computer. I also saw a lot of complaints about not even getting credited for doing it. I really wish they'd take some time to investigate this because if it's happening as much as it seems to be happening then someone needs to remove the offer.
I can deal with the loss of an offer if that means it will save our computers. I'm not a fan of downloading things anyway and hardly ever do it. I hope everything worked out for you and thanks for letting us all know about your experience. Good luck in the future.