Really, Etsy doesn't have anything worth copying other than the basic idea and well, their success. Their copy and wording least of all... anytime there are words on the site, they are the wrong words.
Wish I could drop who it was but I'd rather not burn the bridge.
It was a ridiculous project, they had an India team that took the "just like Etsy" wording so literally that if I designed a screen that didn't look & function 100% identical to Etsy (ie: I improved it) they would have a hissy-fit. I have over a dozen emails that say "please revise to work like etsy.com. we can not move forward until design looks like etsy.com"