Minutes after Democratic presidential front-runner Joe Biden bungled his closing statement in Wednesday’s debate by telling voters to go to a campaign website that did not exist, a college student was using the URL for a spoof election bid. Biden misspoke by directing viewers to “go to Joe 30330″ rather than “text JOE to 30330,” setting off a flurry of jokes on Twitter about the 76-year-old’s ineptitude with technology and a digital race to buy similar domain names