Re: WTF is...
I too was about to ask "WTF is Etsy?".
Now that I know, I can't help wondering where this guy got his data from, given that "Etsy" occurred frequently enough to be significant. I work in an environment populated entirely by people who are geeks or nerds or both, and I see no evidence of a taste for handmade crafts.
Incidentally, I though a geek was a fairground performer who bites the heads off chickens, though I've never seen a satisfactory explanation of why anyone would pay to see this done.