Cody Ko, a YouTube star with 5.7 million subscribers, found himself in a pickle in May. Two different start-ups wanted to give him stock, and he was concerned that they were potentially competitive deals.So Mr. Ko called someone he trusted for advice: Li Jin.Ms. Jin, a venture capitalist, suggested that Mr. Ko, 30, be honest and upfront with the founders of both start-ups about the potential conflict of interest. He agreed and ended up pursuing just one of the deals.“I’d never hesitate to reach out to her if I needed something,” he said of Ms. Jin.If there …
