>"How many women did you see at Startup School this year? I'd guess the number was under 5%"
[Assuming the author is accurate] If you go back to 1996 for Sherry Turkle you're at ~0.5% of Wired covers...i.e. about an order of magnitude less than the startup school representation if all covers were technology (which of course they are not).
Quick & dirty survey of Ted Talks tagged with "Technology" = 38/294 talks by women (~13%). http://www.ted.com/talks?tagid=1