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I'm kind of surprised to see you explicitly call attention to your usage of "you guys" in your post. I'd originally thought that I at least preferred it to leaving "you guys" there unannounced ... but given a little more thinking, I suspect it's actually worse. The subtext that you've provided there, to people who do not identify as "guys", is 'I know you're there, and I know that these words make some of you uneasy, but don't worry, I didn't mean to offend you, I just really really wanted to use these words anyway; I think they're worth the risk of offending you'.
I know what you were trying to get at -- you want to make Hacker News a better place for /everyone/. (And thanks for that!) I'm sure you didn't intend that meaning to non-guys, and I totally understand how that came about. But, given that, I think that you might want to edit those words. Can I recommend the usage of "you all", or if you want to be more colloquial, "you folks"?