Most notable:
- when it comes to purchasing, women in the U.S. buy online more than men, with 12.5% of female internet users making an online purchase in February 2010, compared to 9.3% of men. (ComScore study)
- Women are most receptive to marketing messages on lifestyle, specialty and review sites. (Yahoo study)
For additional indepth analysis, here's an excellent white paper from Ad Age:
The Reality of the Working Woman