Hi Karen - It's true that some architectural styles are more popular than others. Right now in our local area, shingle style is extremely popular. But popularity in styles changes over time. In addition, many homes don't fit neatly into a single style. While many Buyers do not care for contemporary, many do. In particular, contemporary is a popoular style for waterfront properties, because the oversized windows allow panoramic views. And some of the most expensive homes and listings in the area are contemporary.
I would not discount, or mark down, a listing price on a home just because the style is contemporary. It may take longer to sell but this is true of many homes that lean strongly towards a particular style and away from neutral.