Etsy’s decision to go public seems to have unleashed a wave of jokes about Portlandia, yarn crafts, and Brooklyn hipsters on Wall Street. Go ahead and get it out of your system, and when you’re done consider for a moment what this stock offering, which could come as early as April, will mean for the tech IPO market at large. Founded in 2005, Etsy has aged better than many of the startups that have emerged during the past decade, like Yelp or Groupon.