Like orblivion in his comment [1], I too didn't initially understand what was so sexist about that line, then I clicked through to the Cloudmine blog-post on the issue, which had a screenshot of the event posting in question [2].
This made it clearer: that line is not addressing women, it's addressing the event attendees and listing "Women" as one of the perks, because "friendly (female) event staff" get beers for the attendees. It's difficult to believe how a company can offer up "women" as a 'perk', and not expect the reaction that followed.
On a completely different note: it's extremely annoying having to hunt down links when they have exactly the same styling as the surrounding text, like in the Cloudmine blog. [3]
This made it clearer: that line is not addressing women, it's addressing the event attendees and listing "Women" as one of the perks, because "friendly (female) event staff" get beers for the attendees. It's difficult to believe how a company can offer up "women" as a 'perk', and not expect the reaction that followed.
On a completely different note: it's extremely annoying having to hunt down links when they have exactly the same styling as the surrounding text, like in the Cloudmine blog. [3]
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[1] https://news.ycombinator.com/item?id=3733914
[2] https://img.skitch.com/20120320-fmsc5mciy8e7n3nxhakmegxxg9.p...
[3] http://blog.cloudmine.me/post/19639692371/sexism-in-tech