I liked this part:
"All the women at I/O were interviewed, as were all the women at WWDC. Both the ladies attending I/O and all three attending WWDC said they liked the sessions."
A whole bunch of us ladies had lunch together one day, and an Apple photographer was very excited to take too many photos of us, but that was it.
edit: Oh, the original author wasn't specific about who was being interviewed, I presume he/she meant interviewing three specific women. And for what it was worth, the security/non-Apple engineer staff at Moscone West were sort of dismissive about trying to help us organize a lunch area and to let other women know about what we were planning for lunch. Only fellow attendees, engineers, and the photographers were excited to see so many women in the same place.
It's also irritating to read, as there were a lot more women devs this year at WWDC compared to the past three I attended, and Apple employs a lot of very talented female engineers that showed up for sessions and labs. Not sure what prompted this increase (the iPhone? :P ), but it was really nice to see.
My estimate of the percentage of women at WWDC is 5%.