In a recent study at Glamorgan University Business School in Wales, test subjects rated the personal Web pages of 60 people for usability and aesthetics. … Women seemed to like pages with more color in the background and typeface. Women also favored informal rather than posed pictures.
Men responded better to dark colors and straight, horizontal lines across a page. They also were more pleased by a three-dimensional look and images of “self-propelling” rather than stationary objects.
[Via LiveScience.com: How Men and Women View Web Sites Differently]