If this is true, which I have no idea if it is, it would suggest one possible explanation. Posting on listservs is largely a form of slacking. If men slack more, it would not be surprising if they post more on listservs. The opportunity cost of women's time may be higher. Men may have a higher discount rate.
> Date: Tue, 11 Jul 2006 19:25:07 -0400
> From: "Auguste Blanqui" <blanquist at gmail.com>
> Subject: [lbo-talk] Male domination on political listservs
> To: lbo-talk at lbo-talk.org
> Message-ID:
> <8368f3800607111625r196eca1dpe0aed6128d607ed9 at mail.gmail.com>
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>
> A friend on another political listserv noted, with considerable dismay, that
> 90% of the posts are from men. I couldn't come up with very good reasons
> other than occassional masculinist rhetorical tendencies -- can you? I find
> this holds on most every political, even academic, listserv I've been on...