I am what you might call a little hair obsessed. You can't tell by looking at me though—I’ve worn the same style for a decade. But when it comes to thinking about, talking about and marveling at what hair means, I can go on forever.In the pre-social media days, hair obsessed people like me had to peer into beauty salon windows to see a parade of styles, from braids parted like geometric mazes to updos that defied every law of physics. Now, though, you can be a hair voyeur online. There are millions of braids on Instagram and YouTube, and discussion threads all over the Internet. Long before...…I am what you might call a little hair obsessed. You can't tell by looking at me though—I’ve worn the same style for a decade. But when it comes to thinking about, talking about and marveling at what hair means, I can go on forever.In the pre-social media days, hair obsessed people like me had to peer into beauty salon windows to see a parade of styles, from braids parted like geometric mazes to updos that defied every law of physics. Now, though, you can be a hair voyeur online. There are millions of braids on Instagram and YouTube, and discussion threads all over the Internet. Long before...WW…