Here are a few observations from a Pew Internet & American Life report about the demographic differences between Yahoo and Google and how the sexes use them differently.
Men tend to see it as an office, a library, or a playground–screw the community, this is about function not family.
Men tend to be more intense Internet users than women, being more likely to go online daily (61% of men and 57% of women) and more likely to go online several times a day (44% of men and 39% of women).
The report found that women are more enthusiastic communicators, using email in a more robust way. Not only sending and receiving more email than men, women are more likely to write to family and friends about a variety of topics, sharing news, joys and worries, planning events, and forwarding jokes and stories.
While both sexes equally appreciate the efficiency and convenience of email, women are more likely than men to value the medium for its positive effects on improving relationships, expanding networks, and encouraging teamwork at the office.
Want to test your own hypotheses? Microsoft has an interesting adCenter Labs Demographics Prediction Tool. One can certainly have fun with this.
Via digg it