Facebook probably won't notice. Too many people sacrificing their self-being hanging out there for Zuckerberg and friends (investors) to notice one exit.
I just looked and they're up 4.25% today in market value.
Is this a permanent quit at Facebook or a temp.? Asking because you quit last month.
Anyway, I've never had any use for Facebook or understanding of either the site or fascination folks have for it.