There is no such thing as a "digital" antenna. Get rabbit ears and collapse them down as small as possible, or jam a paperclip in the "antenna in" port on the back of your television.
Don't waste your money. Rabbit ears do the same thing as the makers of Clear TV Antenna claim. The carrier wave that is being transmitted doesn't care what kind of information is on it, and neither does the antenna whether it's digital or analog. It's all electromagnetic energy until it reaches a receiver that can demodulate the info on the carrier wave.
Bottom Line: No, I would not recommend this to a friend