Is JetBlue engaging in surveillance pricing, the practice of charging customers different prices based on data like location, age, sex, and income level? That’s the question after a tweet from the airline went viral in recent days. But JetBlue tells Gizmodo the now-deleted tweet was an error. It started on April 18 when an X user called Nugg tweeted at the airline : “I love flying @JetBlue but a $230 increase on a ticket after one day is crazy. I’m just trying to make it to a funeral.” JetBlue responded with, “Try clearing your cache and cookies or booking with an incognito window. We’re sorry for your loss.” You can guess what the response was like. X users interpreted JetBlue’s tweet to mean that information was somehow being collected that caused the price for a ticket to rise by $230. It’s a reasonable assumption, given the way that surveillance pricing has emerged to squeeze every possible dollar out of consumers.…